Question

What value of a makes this equation true?

9/10 = a/30

12
90
3
27

Answer 1

9/10=a/30. and value of a is 27

Answer 2

27

Explanation:

We can use cross products to solve

9 a

----- = --------

10 30

9*30 = 10a

270 = 10a

Divide each side by 10

270/10 = 10a/10

27 =a