Logical Reasoning

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New answer posted

3 months ago

Answer the questions on the basis of the information given below.

In a school when a survey is conducted on liking of subjects out of three subjects physics, chemistry mathematics then outcome is as follow.

Total number of students who like physics, chemistry and mathematics is 30, 40, 50 respectively. 10 students shown interest in all three subjects, Number of students who like physics and mathematics both is equal to number of students who like chemistry and mathematics both and is equal to 3/4 times number of students who like physics and chemistry both 15 students like only chemistry.

When class teacher saw this survey report he to

...more
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

From the given condition g = 10,

Number of students who like both Physics and Maths = 10 + f

Number of students who like both chemistry and Maths = 10 + e

From given condition 10 + f = 10 + e or e = f

Similarly from 3rd condition ¾ (10 + e) = 10 + d

Or 30 + 3e = 40 + 4d

Or

 Since 15 students like only chemistry hence b = 15

Number of students who like only chemistry is 40

Hence e + g + d + b = 40

or e + 10 + (3e – 10)/4 + 15 = 40

or (7e – 10)/4 = 15 or 7e = 70 or e = 10

Hence a = 5, c = 20, f = e = 10, d = 5

Hence the distribution is as follows

As per the observation of  class teacher actual numbers of students who like Physics in

...more

New question posted

3 months ago

0 Follower 3 Views

New answer posted

3 months ago

0 Follower 3 Views

P
Payal Gupta

Contributor-Level 10

Following are the possible ways in which Andy, Kandy, Mandy and Sandy can cross the bridge in minimum time.

Case I:

Journey

Men

Time

1 st trip

Andy, Sandy

3 min

Return

Andy, Sandy

2 min

2 nd trip

Kandy, Mandy

9 min

Return

Sandy

3 min

Final trip

Sandy, Andy

3 min

Total time

 

20 min

 Case II:

Journey

Men

Time

1 st trip

 Sandy

3 min

Return

Andy, Sandy

3 min

2 nd trip

Kandy, Mandy

9 min

Return

 Andy

3 min

Final trip

Sandy, Andy

2 min

Total time

 

20 min

In total, there are 2 ways to do so.

New answer posted

3 months ago

0 Follower 1 View

P
Payal Gupta

Contributor-Level 10

Sandy and Andy are the last to cross the bridge.

New answer posted

3 months ago

0 Follower 2 Views

P
Payal Gupta

Contributor-Level 10

Two men cross at a time, and one must come back with the torch.

Journey

Men

Time

1 st trip

Andy, Sandy

3 min

Return

Andy, Sandy

2 min / 3

2 and trip

Kandy, Mandy

9 min

Return

Sandy, Andy

3 min / 2

Final trip

Sandy, Andy

3 min

Or 

Total time taken for the trip = 20 min

New answer posted

3 months ago

Answer the questions on the basis of the information given below.

In a school when a survey is conducted on liking of subjects out of three subjects physics, chemistry mathematics then outcome is as follow.

Total number of students who like physics, chemistry and mathematics is 30, 40, 50 respectively. 10 students shown interest in all three subjects, Number of students who like physics and mathematics both is equal to number of students who like chemistry and mathematics both and is equal to 3/4 times number of students who like physics and chemistry both 15 students like only chemistry.

When class teacher saw this survey report he to

...more
0 Follower 1 View

A
alok kumar singh

Contributor-Level 10

From the given condition g = 10,

Number of students who like both Physics and Maths = 10 + f

Number of students who like both chemistry and Maths = 10 + e

From given condition 10 + f = 10 + e or e = f

Similarly from 3rd condition ¾ (10 + e) = 10 + d

Or 30 + 3e = 40 + 4d

Or

 Since 15 students like only chemistry hence b = 15

Number of students who like only chemistry is 40

Hence e + g + d + b = 40

or e + 10 + (3e – 10)/4 + 15 = 40

or (7e – 10)/4 = 15 or 7e = 70 or e = 10

Hence a = 5, c = 20, f = e = 10, d = 5

Hence the distribution is as follows

As per the observation of  class teacher actual numbers of students who like Physics in

...more

New answer posted

3 months ago

There were ten events in the last years “annual sports meet” of XYZ international school. Following guidelines have been issued to schedule the “annual sports meet”:

I. A school board has organized the meet for ten events Cultural fest, Science exhibition, Writing , Reading, Dress, Quiz , Festivals, Planting, Drawing and Picnic on six days of week with holiday on Sunday; not having more than two events on any of the days.

II.  Event begins on Wednesday with event Quiz .

III. Reading is accompanied by some other event but not on Thursday. Cultural fest and Festivals

are on the same day immediately after the holiday.

IV. The

...more
0 Follower 3 Views

P
Payal Gupta

Contributor-Level 10

According to the information provided following arrangement of the schedule will be formed.

Days

Events

Wednesday

Quiz and Drawing

Thursday

Dress and Planting

Friday

Reading and science

Saturday

Writing

Sunday

Holiday (*)

Monday

Cultural fest, festival

Tuesday

Picnic

New answer posted

3 months ago

Answer the questions on the basis of the information given below.

In a school when a survey is conducted on liking of subjects out of three subjects physics, chemistry mathematics then outcome is as follow.

Total number of students who like physics, chemistry and mathematics is 30, 40, 50 respectively. 10 students shown interest in all three subjects, Number of students who like physics and mathematics both is equal to number of students who like chemistry and mathematics both and is equal to 3/4 times number of students who like physics and chemistry both 15 students like only chemistry.

When class teacher saw this survey report he to

...more
0 Follower 2 Views

A
alok kumar singh

Contributor-Level 10

Solution for question 1 to 4

From the given condition g = 10,

Number of students who like both Physics and Maths = 10 + f

Number of students who like both chemistry and Maths = 10 + e

From given condition 10 + f = 10 + e or e = f

Similarly from 3rd condition ¾ (10 + e) = 10 + d

Or 30 + 3e = 40 + 4d

Or

 Since 15 students like only chemistry hence b = 15

Number of students who like only chemistry is 40

Hence e + g + d + b = 40

or e + 10 + (3e – 10)/4 + 15 = 40

or (7e – 10)/4 = 15 or 7e = 70 or e = 10

Hence a = 5, c = 20, f = e = 10, d = 5

Hence the distribution is as follows

As per the observation of  class teacher actual numbers of s

...more

New answer posted

3 months ago

There were ten events in the last years “annual sports meet” of XYZ international school. Following guidelines have been issued to schedule the “annual sports meet”:

I.   A school board has organized the meet for ten events Cultural fest, Science exhibition, Writing , Reading, Dress, Quiz , Festivals, Planting, Drawing and Picnic on six days of week with holiday on Sunday; not having more than two events on any of the days.

II.  Event begins on Wednesday with event Quiz .

III. Reading is accompanied by some other event but not on Thursday. Cultural fest and Festivals

are on the same day immediately after the holi

...more
0 Follower 4 Views

P
Payal Gupta

Contributor-Level 10

According to the information provided following arrangement of the schedule will be formed.

Days

Events

Wednesday

Quiz and Drawing

Thursday

Dress and Planting

Friday

Reading and science

Saturday

Writing

Sunday

Holiday (*)

Monday

Cultural fest, festival

Tuesday

Picnic

New answer posted

3 months ago

There were ten events in the last years “annual sports meet” of XYZ international school. Following guidelines have been issued to schedule the “annual sports meet”:

I.   A school board has organized the meet for ten events Cultural fest, Science exhibition, Writing , Reading, Dress, Quiz , Festivals, Planting, Drawing and Picnic on six days of week with holiday on Sunday; not having more than two events on any of the days.

II.  Event begins on Wednesday with event Quiz .

III. Reading is accompanied by some other event but not on Thursday. Cultural fest and Festivals

are on the same day immediately after the holi

...more
0 Follower 3 Views

P
Payal Gupta

Contributor-Level 10

According to the information provided following arrangement of the schedule will be formed.

Days

Events

Wednesday

Quiz and Drawing

Thursday

Dress and Planting

Friday

Reading and science

Saturday

Writing

Sunday

Holiday (*)

Monday

Cultural fest, festival

Tuesday

Picnic

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