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New answer posted
5 months agoContributor-Level 10
Let k, y and z be the cost per kg of onion, wheat and rice. Then, we form a system of equations as follows
4k + 3y + 2z = 60
2k + 4y + 6z = 90
6k + 2y + 3z = 70
In matrix form we can write,
AX = B
= 0 - 3 (-30) + 2 (-20)
= 90 - 40
= 50 ≠ 0.
∴ The system has a unique solution.
The cost of onion, wheat and rice per kg are? 5? 8 and? 8 respectively.
New answer posted
5 months agoContributor-Level 10
The given system of eqn can be written in matrix form as
AK = B
∴ x= 2, y = 1 and z = 3 .
New answer posted
5 months agoContributor-Level 10
The given system of equation can be represented in matrix form as AK = B
New answer posted
5 months ago
New answer posted
5 months ago
New answer posted
5 months agoContributor-Level 10
The given system of eqn in matrix form is AK = B.
Then, |A| = 5 x 3 - 7 x 2 = 15 - 14 = 1 ≠ 0
∴ The system has a unique solution.
∴ k = 2 and y = -3
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