SOLUTION: Ben bowled 127 and 220 in his first two games. What must he bowl in his third game to have an average of at least 170?

Algebra ->  Customizable Word Problem Solvers  -> Mixtures -> SOLUTION: Ben bowled 127 and 220 in his first two games. What must he bowl in his third game to have an average of at least 170?      Log On

Ad: Over 600 Algebra Word Problems at edhelper.com


    

Question 714491:
Ben bowled 127 and 220 in his first two games. What must he bowl in his third game to have an average of at least 170?
Answer by checkley79(3341) About Me  (Show Source):
You can put this solution on YOUR website!
(127+220+X)/3>=170 CROSS MULTIPLY.
127+220+X=170*3
347+X>=510
X>=510-347
X>=163 IS NEEDED ON THE THIRD GAME TO AVERAGE AT LEAST 170
PROOF:
(127+220+163)/3>=170
510/3>=170
170>=170