Question

Abby was 5 feet 2 inches tall at the beginning of the school year. By February, she was 5 feet 8 inches tall. What is the percent increase in her height? Round to the nearest tenth.

Answer 1

9.7 %

Explanation:

Step 1

The formula for Percentage increase = increase/Original Amount × 100

Increase = Current amount - Original Amount

= 5 feet 8 inches - 5 feet 2 inches

= 6 inches

Increase = 6 inches

Step. 2

Before calculating Percentage increase, convert original amount to inches for easy calculation

Hence:

Original amount = 5 feet 2 inches

1 foot = 12 inches

5 feet = x

Cross Multiply

x = 5 × 12 inches = 60 inches

Original amount = 60 inches + 2 inches = 62 inches

Percentage increase

= 6 inches/62 inches × 100

= 9.6774193548%

Approximately = 9.7 %

The percent increase in her height = 9.7%