Question

Stacia was 5 feet tall on her 12th birthday and 5 feet and 3 inches tall on her 13th birthday.What was the percent increase in Stacia’s height from her 12th birthday to her 13th birthday?

Answer 1

6%

Explanation:

So, lets first go over what we know:

S(Stacia) = 5(feet) when she was 12

S = 5.3 when she was 13

To find the answer, we must find the percentage of change from 5 to 5.3.

The equation we can use to find the percentage of increase looks like:

`(5.3)/(5) = percent`

Put this in your calculator, or do this out.

When your done, you should get 1.06

Now, to put this in percentage form, we must multiply by 100:

1.06 · 100 = 106

Stacia was already 100% of her height, so the increase was 6%.

Hope this helps! :D

Answer 2

5%

Explanation:

Initial height = 5 feet

Increased height on 13th birthday = 3 inches

5 feet = 12 inches per feet = 60 inches

60 + 3 = 63 inches

`(4.8*63)/(100)`

`4.8 * 63=302.4`

`302.4 /100=3.024`

4.8 rounded to 5%

`(63-60)/(60) * 100=5`

= 5% increase

Hope this helps.