Question

Jim has gotten scores of 100 and 63 on his first two tests. What score must he get on his third test to keep an average of 85 or greater?

Answer 1

92

Explanation:

x= the ideal mark for his third test

100 + 63 + x/3 = 85

163+x=85x3

163 + x = 255

x=92

He would need to get at least a 92 to have the 85 average.