Im just a little confused on how to answer this question.

A ball bounced 64% of the height from which it was dropped. The bounce was 72 cm high. What is the height from which the ball was dropped.
I think there has to be an algebraic equation of some sort, but I'm not sure how to find the right one.

3 answers

let the original height be h cm

so 64% of h = 72
.64h = 72
h = 72/.64 = 112.5 cm

(check by taking 64% of 112.5)
A new queen size bed sheet measures
210 cm by 240 cm. The length and
width each shrinks by 2% after the first
wash.
a) What are the dimensions of the
sheet after washing?
b) What is the percent decrease in the
area of the sheet?
Your answer is correct. Thank you so much for helping with the math question.