Question

When Mrs. Carter got a flat tire, 73% of the 32 pounds of air in the tire escaped.

Which is the best estimate of how many pounds of air escaped?

Answer 1

Explanation:

100% = 32

73% = 73×1% = 73×100%/100 = 73×32/100 = 23.36 pounds.

for an estimate I would round up to 75% = 3/4, and then calculate quickly 32 × 3/4 = 8×3 = 24 pounds.