Question : A shopkeeper has a sale of Rs. 5,445, Rs. 5,937, Rs. 5,865 and Rs. 6,562 for 4 consecutive days. If he gets an average sale of Rs. 6,050 for 5 days, then his sale on the fifth day is:
Option 1: Rs. 6,131
Option 2: Rs. 6,341
Option 3: Rs. 6,441
Option 4: Rs. 6,231
Correct Answer: Rs. 6,441
Solution : The total sale for 5 days can be calculated by multiplying the average sale by the number of days = Rs. 6,050 × 5 = Rs. 30,250 The total sale for the first 4 days = Rs. 5,445 + Rs. 5,937 + Rs. 5,865 + Rs. 6,562 = Rs. 23,809 The sale on the fifth day is the total sale for 5 days minus the total sale for the first 4 days = Rs. 30,250 – Rs. 23,809 = Rs. 6,441 Hence, the correct answer is Rs. 6,441.
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