Question

Anais bought 212212 yards of ribbon. She had 2 feet 8 inches of ribbon left after trimming some curtains. How many inches of ribbon did Anais use to trim the curtains?
Anais used _____ inches of ribbon.
The solution is

Answer 1

2 1/2 yds = 2.5 x 36 = 90 inches...what she started with

2 ft 8 in = 2(12) + 8 = 32 inches...what she had left

90 - x = 32 
90 - 32 = x
x = 58 inches....so she used 58 inches