Logical Reasoning
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New answer posted
3 months agoContributor-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
New question posted
3 months agoNew answer posted
3 months agoContributor-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 agoContributor-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 agoContributor-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
New answer posted
3 months agoContributor-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 agoContributor-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
New answer posted
3 months agoContributor-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 agoContributor-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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