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raketka [301]
3 years ago
12

Charley's grade in the three quarters are 85, 88, and 92. If she targets to have an average

Mathematics
1 answer:
topjm [15]3 years ago
5 0

Step-by-step explanation:

We can set up an average equation in the form, where x is the last score in the fourth quarter:

\frac{85 + 88 + 92 + x}{4} = 90

85 + 88+92 + x =360\\\\x = 95

She needs at least a 95 on the last quarter to average 90 in all four quarters.

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