What value of a makes the equation true? (30)/(45) = (6)/(a) A: 6 B: 9 C: 30 D: 225

Question

What value of a makes the equation true?


`(30)/(45)` =
`(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