SOLUTION: arnold has taken 4 tests. on the 1st test he scored 83%, on the 2nd he got 85%, and on the 3rd he got 100%. the 4th test is counted double any of the other tests. what score did he
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Question 441577: arnold has taken 4 tests. on the 1st test he scored 83%, on the 2nd he got 85%, and on the 3rd he got 100%. the 4th test is counted double any of the other tests. what score did he get on the 4th test if his final overall average was 90% Answer by rwm(914) (Show Source):
You can put this solution on YOUR website! Where is the rate of work problem.This is simple average.
(.83+.85+1.00+2x)/5=.90
He needs to get 91 to get 90 average
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