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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?
Wiki User
∙ 14y ago
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.
Wiki User
∙ 14y ago
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If average of 3 quizzes is 84 what must you make on 4th quiz to increase average to 88?
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.
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?
The student will do 9 quizzes in all and must have a mean score of 90. So his total score from 9 quizes must be 90*9 = 810 The student has scored 715 in 8 quizzes so he needs 810-715 = 95 in his last quiz.
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