A machine produces 120, 150, 130, and 100 units on four consecutive days. How many units should it produce on the 5th day to bring the average output to 130 units?
Show answer & explanation
Correct answer: C
Explanation
Given:
Production for four days = 120, 150, 130, 100
Average production = 130
By the formula:
Average = Total ÷ Number
Sum of first four days = 120 + 150 + 130 + 100 = 500
Required total for 5 days = 130 × 5 = 650
Production on day 5 = 650 − 500 = 150
Production on day 5 = 150 units