Question

A premature infant is gaining 2.5 ounces a day. At that rate, how many days will it take for him to gain 8 ounces

Answer 1

8 / 2.5 = 3.2 days

or u can do it this way...
2.5x = 8
x = 8/2.5
x = 3.2

Answer 2

3.5  days because 4 days will put the infant over