Question

Karen measured her height as 59 inches. That is 27 inches more than half her older sister’s height. How tall is her older sister?

Answer 1

Let the older sister's height be x inches. The problem gives:
59 = (1/2)x + 27.
Subtract 27: (1/2)x = 32.
Multiply by 2: x = 64.

So the older sister is 64 inches tall (5 ft 4 in).