20 + 70 + x = 120
x = 30
120 + y = 200
y = 80
The average of 20,70 and x is 40. If the average of 20,70, x and y is 50, then y=
a. 30
b. 60
c. 70
d. 80
e. 100
1 answer
a. 30
b. 60
c. 70
d. 80
e. 100
1 answer
1 answer
5 answers
1 answer
1 answer