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erica [24]
4 years ago
13

On his first three tests, Blake scored 81,74, and 100. What score must he get on his fourth test to have an average (mean) of 80

for all four test ?
Mathematics
1 answer:
lakkis [162]4 years ago
6 0
80*4=320
320-81-75-100=65

he must get a 65%
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