Question

Carla has lost 15% of her starting weight. If she has lost 24lbs what was her starting weight

Answer 1

15 can go into 100, as a whole, 6 times(90). So 24*6 equals 144.
Now how many times can 15 go into 10(remainder)? 2/3 of the way, right? 2/3 of 24 is 16. So 144+16=160. 

Check:160*.15=24 

So her starting weight is 160 lbs.