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11111nata11111 [884]
2 years ago
15

Ashley has scored 81, 74, 72, and 93 on her previous four tests. What score does she need on her next test so that her average (

mean) is 79?
Mathematics
1 answer:
charle [14.2K]2 years ago
6 0

Answer:

75

Step-by-step explanation:

Add 81, 74, 72, and 93 together

add 75 to that total

divide by 5

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Answer:

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Using Ratio Method

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By using cross multiplication

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The equation c= \frac{3}{7}f represents the relationship between c and f

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