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Lesson: Applied Arithmetic - 09t01

In-Format Ratio Problems, continued

[Page 9 of 36]
Task Let's try another. Click on the correct response and then click Continue.

A cookie jar contains only two types of cookies—macaroons and ginger snaps. The ratio of macaroons to ginger snaps is 2 to 5. Which of the following could be the total number of cookies in the cookie jar?

42
45
48
52
57

Hint

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If the ratio of the parts is 2 : 5, then the ratio total = 2 + 5 = 7. Thus the total number of cookies must be a multiple of 7. The only answer choice that's a multiple of 7 is Choice (1), 42 cookies.

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