Pete is a student at Drudgery High. After every test he figures his cumulative average, which he always rounds to the nearest whole percent. (So 85.49 would round down to 85, but 85.50 would round up to 86.) Today he had two tests. First he got 75 in French, which dropped his average by 1 point. Then he got 83 in History, which lowered his average another 2 points.
What is his average now?
If her cumulative average is 99,4 in 12 exams she is going to round it to
99.
When he receive a 75 her new average should be:
(99,4*12+75)/13=97,52 and she is going to round to 98
When she receive the mark in History, a 83 the new average should be:
(99,4*12+75+83)/14=96,48
And she is going ro round it to 96.
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Posted by armando
on 2019-01-22 10:50:52 |
possible solution
