The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs 90 pe...........

Quantitative Aptitude ( CCS) Average

The average wages of a worker during a fortnight comprising 15 consecutive working days was Rs.90 per day. During the first 7 days, his average wages was Rs.87/day and the average wages during the last 7 days was Rs.92 /day. What was his wage on the 8th day?

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Explanation:

The total wages earned during the 15 days that the worker worked :
=15×90=Rs.1350.
The total wages earned during the first 7 days = 7×87 = Rs. 609.
The total wages earned during the last 7 days = 7×92 = Rs. 644.
Total wages earned during the 15 days = wages during first 7 days + wage on 8th day + wages during the last 7 days.
1350=609+ wage on 8th day +644
wage on 8th day = 1350−609−644 = Rs. 97