The sum of five numbers is 200. The average of the first two numbers is 20 and the third number is 50. Find the average of the two numbers?
Pick:
A) 50
B) 55
C) 60
D) 65
E) 70
Let the five numbers be P, Q, R, S and T.   =&gt; P + Q + R + S + T = 200   (P + Q)/2 = 20 and R = 50   P + Q = 40 and R = 50   P + Q + R = 90   S + T = 200 - (P + Q + R) = 110   Average of the last two numbers   = (S + T)/2 = 55   Answer:55
<result>B</result>
The sum of five numbers is 200. The average of the first two numbers is 20 and the third number is 50. Find the average of the two numbers?