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If average of 3 quizzes is 84 what must you make on 4th quiz to increase average to 88?
Wiki User
∙ 14y ago
If average for 3 = 84 then sum for 3 = 84*3 = 252.
If average for 4 = 88 then sum for 4 = 88*4 = 352
so required score in quiz 4 = 100.
Wiki User
∙ 14y ago
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After taking 6 quizzes you average 72 out of 100 What must your average be on the next 5 quizzes to increase your average to 77?
Target over 11 is 11 x 77 ie 847; you have already scored 6 x 72 , ie 432 so you need 415 over the next 5, which is an average of 83.
A student must have a mean score of 90 on his math quizzes to earn an A So far he has received grads of 88 85 91 92 94 81 86 and 98 what grade must he earn on his final quiz how do you find the answer?
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After taking 6 quizzes you average 72 out of 100 What must your average be on the next 5 quizzes to increase your average to 77?
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A student must have a mean score of 90 on his math quizzes to earn an A So far he has received grads of 88 85 91 92 94 81 86 and 98 what grade must he earn on his final quiz how do you find the answer?
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