Question

An inchworm travels 15 mm in 12 minutes. Find his speed in inches per hour.

Answer 1

his speed would be 75mm per hour

Explanation:

This is because 12 x 5 = 60 minutes. So, 15x5 = 75

Answer 2

60 minutes / 12 minutes = 5
15 mm in 12 minutes
15 * 5 = 75 mm
1 inch = 25.4 mm
75 / 25.4 = 2.95 inches
2.95 in/hour