Question

A ball dropped from a certain height rises after bouncing to 45% of its original height. After bouncing if the ball rises to 3 ft. What is the height from which it was dropped?

Answer 1

If x is the original height, then \[3 = .45x\]
so \[3/.45 = x\]
x = 20/3 = 6.666...

Answer 2

Thanks. I got that also, but didn't think It was right.

Answer 3

That is correct. If you try it out.

If the ball is 6.66666 high to begin with, then 45% of 6.66666 is 3 ft.