Question 928781
lowest score on the fourth test for a B in the class:
(86 + 72 + 94 + x)/4 = 80
(86 + 72 + 94) + x = 80*4
x = 80*4 - (86 + 72 + 94)
x = 68
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highest score on the fourth test for a B in the class:
(86 + 72 + 94 + x)/4 = 89
(86 + 72 + 94) + x = 89*4
x = 89*4 - (86 + 72 + 94)
x = 104
cannot get 104 on the fourth test, because the maximum test score is 100
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answer:
range of scores on fourth test for a B in the class: 68 to 100
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