Heather sees that two stores have similar sales. store a says that 5 balloons will cost her $6.00 and store b says that 13 balloons will cost her $16.25. if she is planning on buying 27 balloons and wants to spend as little money as possible, which store should she buy from and how much would it cost her?

Question

Mathematics

Ali

7 March, 15:02

Heather sees that two stores have similar sales. store a says that 5 balloons will cost her $6.00 and store b says that 13 balloons will cost her $16.25. if she is planning on buying 27 balloons and wants to spend as little money as possible, which store should she buy from and how much would it cost her?

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Answers (1)

Know the Answer?

Justin Hanna · Answer 1

Do proportions for both

5/6 = 27/x

Cross multiply and divide

27 x 6 divided by 5 is $32.4

Next proportion:

13/16.25 = 27/x

Cross multiply and divide

27 x 16.25 divided by 13 = $33.75

So your answer store A with a cost of $32.4