Milo's parents tell him that he can win cash rewards for good grades. He will get $5 times the average grade he gets. He gets three 2s, four 3s, a 4, and a 5. How much cash does he get?
His total score is 27 because (3 x 2) + (4 x 3) + 4 + 5 = <<3*2+4*3+4+5=27>>27
His total number of grades is 9 because 3 + 4 +1 +1 = <<3+4+1+1=9>>9
His average grade is a 3 because 27 / 9 = <<27/9=3>>3
He earns $15 because 5 x 3 = <<5*3=15>>15
#### 15