Ravi's calorie intake for 6 days was 2100, 2200, 2000, 2300, 2400, and 2100. On the 7th day, he forgot to record his food. If the weekly average intake is 2200, how many calories did he consume on the 7th day?
Show answer & explanation
Correct answer: B
Explanation
Given:
Calorie intake for 6 days = 2100, 2200, 2000, 2300, 2400, 2100
Weekly average = 2200
Total required for 7 days = 2200 × 7 = 15400
Sum of first 6 days = 2100 + 2200 + 2000 + 2300 + 2400 + 2100 = 13100
Intake for 7th day = 15400 − 13100 = 2300
Calorie intake for 7th day = 2300