The average of five numbers a, b, c, d and e is 150. If the average of the first three numbers a, b and c is 130, then the average of the last two numbers d and e is:
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 180.
Sum of the five numbers = 150 × 5 = 750
Sum of the first three numbers = 130 × 3 = 390
sum of the last two numbers = 750 - 390 = 360
Required average = 360/2 = 180