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Mary is making a party mix to bring to school. She believes that the perfect ratio of pretzels to peanuts is 3 to 5. If Mary knows that she is going to use 65 peanuts in the mix, how many pretzels will she need?

Sagot :

Answer:

39 pretzels

Step-by-step explanation:

let 'p' = # pretzels needed

3/5 = p/65

cross-multiply to get:

5p = 195

p = 195/5

p = 39