Question

Harry's math grade consists of 60% tests and 40% quizzes. Harry's quiz scores are

60, 72, 77, and 79. If Harry wants to have an overall average of at least 75 for the
quarter, what score will he need on his test?

Answer 1

77

60+72+77+70 = 288/4 = 72*.4 = 28.8

46.2 points to get 75

set up proportion:

60/100 = 46.2/x

x = 77

I'm sure there's an easier method but that's just my thought process