Question 896556
another way
72-70=2
85-70=15
53-70=-17
80-70=10
for a difference of +10

x-70=-10
x=60
72-70=2
85-70=15
53-70=-17
80-70=10
60-70=-10
for a difference of 0

72+ 85+ 53 + 80+60=350
350/5=70