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Gerhard's Bistro has an 5:8 ratio of lunch customers to dinner customers. It averages 40 lunch customers. What is its average number of customers for dinner?

2 Answers

2 votes
64+40=104
Answer is 104
User Gerrit Zijlstra
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3 votes
Solve this ratio:

5 40
--- = -----
8 x

Then 5x = 320, and x = 64. So, on a day on which there are 40 lunch customers, there are 64 dinner customers (answer).
User Mcritz
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