Mark is measuring the size of his children’s hands. His daughter’s handspan is 7.38 inches, and his son’s handspan is 16.05 centimeters. There are 2.54 centimeters in an inch. Which child’s handspan is longer, and how many feet longer is it?
Answer
A
Mark’s son’s handspan is 0.0662 feet longer than his daughter’s.
B
Mark’s son’s handspan is 0.856 feet longer than his daughter’s.
C
Mark’s daughter’s handspan is 0.0883 feet longer than his son’s.
D
Mark’s daughter’s handspan is 0.225 feet longer than his son’s.
Explanation
Convert the daughter’s handspan to centimeters: 7.38 × 2.54 = 18.7452 cm. This is 18.7452 − 16.05 = 2.6952 cm longer than her son’s handspan. Since 1 foot is 30.48 cm, the difference is 2.6952 ÷ 30.48 ≈ 0.0883 feet, so Mark’s daughter’s handspan is 0.0883 feet longer.
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