Question

What is the answer to this question?

Answer 1

x = 10, y = 40

Explanation:

Given the 2 equations

y = 4x → (1)

2y + 2.5x = 105 → (2)

Substitute y = 4x into (2)

2(4x) + 2.5x = 105, that is

8x + 2.5x = 105

10.5x = 105 ( divide both sides by 10.5 )

x = 10

Substitute x = 10 into (1)

y = 4x = 4 × 10 = 40

Answer 2

(check the image below)

Explanation:

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