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OLga [1]
3 years ago
10

On his first three tests, Shaun scored 88, 98, and 79. What score must he get on his fourth test to have an average (mean) of 80

for all four tests?
Mathematics
1 answer:
solniwko [45]3 years ago
7 0

Answer:

Step-by-step explanation:

let score in fourth test=x

88+98+79+x=80×4

265+x=320

x=320-265=55

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