Question

Since it arrived at a safari park, a giraffe's height has increased from 8
`(1)/(2)` feet to 12
`(3)/(4)`. By what percent has the giraffe's height increased? PLZ show your work and explain.

A. 30%
B. 40%
C. 50%
D. 60%

Answer 1

It's A.

8 1/2 ÷12 3/4 × 100 = 66.66667%
100% - 66.66667% = 33.33333%

This wasn't an option, but the closest estimate to this is: 30%, so it's A.

Answer 2

Height of giraffe increases by
`50%\\`

Explanation:

The initial height of giraffe is
`8(1)/(2)\\(17)/(2) \\`

The final height of giraffe is
`12(3)/(4) \\(51)/(4)\\`

Percentage increase in height

`(((51)/(4) - (17)/(2) )/((17)/(2) )) *100\\= 50\\`

The height of giraffe increases by
`50%\\`