A grocer has a sale of ₹ 3,425, ₹ 3,810, ₹ 3,155 and ₹ 3,610 in 4 consecutive days. How much sale should he have in the 5th day so as to get an average sale of ₹ 3,500?
- A₹ 3,500
- B₹ 3,435
- C₹ 3,480
- D₹ 3,455
Solution & Step-by-step Explanation
Let the sale on the 5th day be x.
The total sales for 5 days required to maintain an average of ₹ 3,500 is:
Total Sales=5×3500=₹ 17,500
The sum of sales of the first 4 days is:
3425+3810+3155+3610=₹ 14,000
To find the sale on the 5th day:
14000+x=17500
x=17500−14000=₹ 3,500
The total sales for 5 days required to maintain an average of ₹ 3,500 is:
Total Sales=5×3500=₹ 17,500
The sum of sales of the first 4 days is:
3425+3810+3155+3610=₹ 14,000
To find the sale on the 5th day:
14000+x=17500
x=17500−14000=₹ 3,500