Question

what value of a makes the equation true?
$\frac{30}{45}$ = $\frac{6}{a}$


A: 6
B: 9
C: 30
D: 225

Answer 1

30/45 = 6/a

using cross products

30 * a = 45*6

divide by 30

a = 45*6/30

a =9

Choice B