short answer dealing with average

Question

suppose that to make the golf team you need to score no more than 78 on average over 5 games. if you scored 75, 88, 70, and 67 in your first 4 games what is the highest score you can shoot in your 5th game and still make the team

Answer 1

Your total score has to be 78 times 5

 

78(5)=390

 

What is you total so far?

 

75+88+70+67 = 300

 

Looks like if you shoot a 90, all is well

 

(75+88+70+67+X)/5 = 78

 

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