Question

Leah decided to paint some of the rooms at her 51 room hotel. She needs 1/5 of a can to paint per room.if Leah had 6 cans of paint, how many rooms can she paint?

Answer 1

If 1/5 can for 1 (each) room, then:
for 51 rooms, (51*1/5)=10.2 rooms.
Round to nearest whole number since you can't just paint 0.2 of a room: answer = 10

Answer 2

First, we need to know how many rooms she can paint with one can. If Leah can paint one entire room with just $\frac{1}{5}$ of a can, Leah can paint 5 rooms with 1 can of paint. We can figure this out by adding the numerator until we get to the denominator. If the fraction is $\frac{1}{5}$, we can add 4 to the numerator and we will get $\frac{5}{5}$ which equals 1. If Leah can paint 5 rooms with one can of paint, we can multiply 5 by 6 and we will get a product of 30.

Therefore, Leah can paint 30 rooms at her hotel.