40 is the answer for the blank
30/36 = x/48
using cross products
30*48 =x*36
divide by 36
30/36 * 48 =x
factor out a 6/6
5/6*48 =x
5/1 * 8 =x
x=40
30/36 = 40/48
8.5m questions
11.2m answers