Six tables and twelve chairs were bought for Rs7800. If the average price of a table is Rs750, then the average price of a chair would be1). Rs2502). Rs2753). Rs1504). Rs175
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1. The average weight of 10 boys is increased by 1.5 kg when Arjun whose weight is 45 kg is replaced by Rohan. Find the weight of Rohan?
2. The average income of 40 persons is Rs 4200 and that of another 35 persons is Rs 4000. The average income of the whole group is:
3. What is the average of first 25 multiples of 11?
4. What is the average of all the one digit and two digit natural numbers?
5. The mean of 20 items is 55. If two items 45 and 30 are removed , the new mean of the remaining items is
6. A batsman makes a score of 95 runs in the 13th match and thus increases his average runs per match by 4. What is his average after the 13th match?
7. The ratio of ducks and frogs in a pond is 35 : 43 respectively. The average number of ducks and frogs in the pond is 234. How many ducks are there in the pond?
8. The batting average of a cricket player for 64 innings is 62 runs.His highest score exceeds his lowest score by 180 runs. Excluding these two innings, the average of remaining innings becomes 60 runs. His highest score was
9. Three years ago, the average age of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is
10. Mean of 10 numbers is 30. Later on It was observed that numbers 15,23 are wrongly taken as 51,32. The correct mean is
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