Question

Olivia is 48 inches tall , and 2/3 as tall as her brother Cameron. In inches,how tall is Cameron?

Answer 1

Cameron is 72 inches tall. 
2/3 of 72 = 48

Answer 2

Cameron is 72 inches tall.
"Olivia is 48 inches tall"
So you would do... 48 = (2/3)x
Math:
48 = (2/3)x
48(3/2) = x
Your answer would be: 72 = x