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Maths Exercices

Solve proportions: word problems

Brandi read a total of 9 books over 3 months. If Brandi has read 12 books so far, how many months has she been with her book club? Assume the relationship is directly proportional.

Set up a proportion and solve for n.


9n = 12 × 3 Find the cross products

9n = 36 Multiply

n = 4 Divide both sides by 9

If Brandi has read 12 books so far, then she has been with her book club for 4 months.



A painting is 3 in tall and 10 in wide. If it is enlarged to a width of 40 in then how tall will it be?

Solution: