Question

nails human fingernails grow at an average rate of 3.47 millimeters per month. how much will they grow in 20 months?

Explanation:

Step1: Identify the growth - rate and time

Growth rate = 3.47 mm/month, time = 20 months

Step2: Use the multiplication formula

The growth amount = growth rate×time, so 3.47×20
3.47×20 = 69.4

Answer:

69.4