The math teacher would be happy if the class average test score was at least 85. There are 10 students in the class, 5 of which scored a 92 on the test and 4 of which scored an 80. What would the last student have to score to at least make the teacher happy?
The math teacher would be happy if the class average test score was at least [NUMBER]. There are [NUMBER] students in the class, [NUMBER] of which scored a [NUMBER] on the test and [NUMBER] of which scored a [NUMBER]. What would the last student have to score to at least make the teacher happy?
5 students scored a combined total of 92 * 5 = <<92*5=460>>460
4 additional students scored a combined total of 80 * 4 = <<80*4=320>>320
9 students therefore scored a combined total of 460 + 320 = <<460+320=780>>780
We know the total combined score for 10 students must be at least 85 average * 10 students = <<85*10=850>>850
Therefore, the last student must score at least an 850 - 780 = <<850-780=70>>70
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