Question

Last year Jill was 5.1 feet tall. She grew 8% taller in 1 year. How tall is she now? 5.28 feet 5.30 feet 5.41 feet 5.51 feet

Answer 1

5.51 feet

Explanation:

The problem wants you to find 8% of 5.1 and then add this to 5.1. To do this multiply 5.1 by 0.08.

5.1 * 0.08 = 0.408

Add this to 5.1.

5.1 + 0.408 = 5.508

Rounded to the nearest hundredth (as it looks like all the answer choices are), it would be 5.51.

Answer 2

5.51 feet

Explanation:

an 8% increase in height represents 100% + 8% = 108%

108% =
`(108)/(100)` = 1.08

multiply her height by 1.08 to find her height 1 year later

5.1 × 1.08 = 5.508 ≈ 5.1 feet