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this is my last math question, thank you guys so much.

Robert wants to have a mean of 150 for his bowling scores. He has bowled 137, 165, 142, and 139 in his first 4 games. He will bowl one more game. What is the least score that he can have in his fifth game to have a mean of 150?

133
143
157
167

Okay, so you are trying to find the average. So basically, you want to add those 4 answers plus one of the choices, divide by 5...& the answer has to be 150 to be the correct answer:

a) 137 + 165 + 142 + 139 + 133 / 5 = 716 (incorrect)
b) 137 + 165 + 142 + 139 + 143 / 5 = 145.2 (incorrect)
c) 137 + 165 + 142 + 139 + 157 / 5 = 148 (incorrect)
d) 137 + 165 + 142 + 139 + 157 / 5 = 150
(correct answer).

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