Question: Following her doctor’s recommendation to up her daily water intake, Nancy now drinks the equivalent of 60% of her body weight in water. If Nancy’s daily water intake is 54 pounds, how much, in pounds, does she weigh?
Answer: 
Let Nancy’s weight be x
We know that 60/100 * x = 54 pounds
This translates to x= 54*100/60 = 90 pounds