Question

Molly's hair was 20 " long. 3 years later it was 35 " Long . what was the percent increase to the nearest hundredth of Molly's hair length? And her in the box below

Answer 1

75% or

1) Gathering the data

Molly 3 years Molly

20" long 35 "

2) Let's find the percent increase by setting a proportion

20" -------------- 100%

35" ------------- x

Cross multiplying those ratios, since it is a proportion

20x =3500

x =175

Subtracting 100 from 175 => 175 -100 = 75

3) So the percent increase of Molly's hair is 75% or 0.75