Salim gets grades of 79, 83, 86 and 89 on four math tests . What grade must he get on his fifth test to average 85 ?
Created: 9 months ago | Updated: 3 months ago
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Let,fifth test grade is x,

So average, 79+83+86+89+x=85*5

=>337+x=425

So, x= 88

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