A shopkeeper has a sale of Rs.10,000, Rs.5,500, Rs.8,000 and Rs.10,500 for 4 consecutive months. How much sale must he have in the fifth month so he gets an average sat of Rs.9,000 in five months?
Answer & explanation
Correct answer: option 3
Sum of sales of five months = 9000 x 5 = 45000
Sum of sales of 4 months = 10000 + 5500 + 8000 + 10500 = 34000
Sale of 5th month = 45000 - 34000 = 11000