S superme New member Joined Mar 22, 2007 Messages 6 Mar 28, 2007 #1 how can I find the answer to this problem? Joe's average on the first four exams was 86. What score does Joe need to earn on the 5th exam in order to raise his average to 87? Help :!:
how can I find the answer to this problem? Joe's average on the first four exams was 86. What score does Joe need to earn on the 5th exam in order to raise his average to 87? Help :!:
M Mrspi Senior Member Joined Dec 17, 2005 Messages 2,127 Mar 28, 2007 #2 superme said: how can I find the answer to this problem? Joe's average on the first four exams was 86. What score does Joe need to earn on the 5th exam in order to raise his average to 87? Help :!: Click to expand... If Joe ends up with an average score of 87 for 5 tests, he'd need a total of 5*87 points. So far, he has an average of 86 for 4 tests, which means he has already earned 4*86 points. How many more does he need?
superme said: how can I find the answer to this problem? Joe's average on the first four exams was 86. What score does Joe need to earn on the 5th exam in order to raise his average to 87? Help :!: Click to expand... If Joe ends up with an average score of 87 for 5 tests, he'd need a total of 5*87 points. So far, he has an average of 86 for 4 tests, which means he has already earned 4*86 points. How many more does he need?
D Denis Senior Member Joined Feb 17, 2004 Messages 1,706 Mar 29, 2007 #4 Yes, 91: why are you confused?
91?