SOLUTION: Maria's scores for two games in bowling were 129 and 144. What must be her lowest score in the next game in oreder to have an average greater than 140 for the three games?

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Question 61954: Maria's scores for two games in bowling were 129 and 144. What must be her lowest score in the next game in oreder to have an average greater than 140 for the three games?
Found 2 solutions by joyofmath, checkley71:
Answer by joyofmath(189) About Me  (Show Source):
You can put this solution on YOUR website!
If Maria is to average greater than 140 for 3 games then her total must be greater than 420 for the three games. She has a total of 129+144=273 for 2 games. Scoring 147 on the 3rd game game would put her exactly at 420 total.
Maria must score 148 or higher.

Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
(129+144+X/3)>140
(273+X)/3>140
273+X>420
X>420-273
X>147 MUST BE THE MINIMUM SCORE FOR THE THIRD GAME.