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Makovka662 [10]
3 years ago
14

Yoko has scored 81 , 84 , 84 , 69 , and 76 on her previous five tests. What score does she need on her next test so that her ave

rage (mean) is 81 ?
Mathematics
1 answer:
kkurt [141]3 years ago
7 0
Took must make a 92 on the next test.
(81+84+84+69+76+x)/6=81
(394+x)/6=81
Multiply by 6 on both sides
394 + x = 486
Subtract 394 from both sides.
x= 92
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