Question

What is the value of x in the equation 4x + 8y = 40, when y = 0.8?

A) 4.6
B) 8.4
C) 10
D) 12

Answer 1

4x+8y= 40

4x+8(0.8) = 40

4x = 40-6.4

x = 33.6/4

x = 8.4

SO, OPTION B IS YOUR ANSWER

Answer 2

The answer is B) 8.4