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Joan can paint 2 rooms of the same size in 5 hours. If she paints for 7 1/2 hours, how many rooms of the same size can she paint?

Joan can paint 2 rooms of the same size in 5 hours. If she paints for 7 1/2 hours, how many rooms of the same size can she paint?
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11 votes
Joan can paint 2 rooms of the same

size in 5 hours. If she paints for
7 1/2 hours, how many rooms of the
same size can she paint?

User SantoXme
by
8.5k points

1 Answer

4 votes

Answer:

3 rooms

Explanation:

2x = 5

x = 5/2

5/2 = 7.5/x

5x = 15

x = 3

User Jay Zhang
by
8.7k points
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