Question

Grandpa Ernie is shrinking! Over the past 1.2 years, his height decreased a total of 3.36 centimeters. What was his average change in height each year?

a. 2.8 cm
b. 2.2 cm
c. 2.0 cm
d. 1.5 cm

Answer 1

The correct answer is a) 2.8 cm. To find Grandpa Ernie's average yearly height decrease, divide the total height change (3.36 cm) by the number of years (1.2), resulting in 2.8 cm per year.

Step-by-step explanation:

The question asks about the average change in Grandpa Ernie's height per year, given a total decrease of 3.36 centimeters over 1.2 years. To find the average change in height each year, you divide the total change in height by the number of years. So, you calculate 3.36 cm ÷ 1.2 years = 2.8 cm per year. Therefore, the correct choice is (a) 2.8 cm.