11. Morty scored an 80, 60, 20, and an 20 on his first four math tests. What does he need to score on his fifth math test to
average an 50 overall?

He needs to score a 20% on his last test.

Step-by-step explanation:

80+60+20+20+20 = 200. 200/4 = 50

he would need to score a 70

Step-by-step explanation:

So, 80+60+20+20 = 180 and to find the average dived by the number of numbers witch is 45. to find the missing number you would need to add 180 and a number. I started at 20 then 30,40,50,60, then, 70. so 180+70 is 250 and 250/5 is 50

215.92 dollars is the answer