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The arithmetic mean of 100 observations ...

The arithmetic mean of 100 observations is 24, 6 is added to each of the observations and then each of them is multiplied by 2.5. Find the new arithmetic mean.
100 प्रेक्षणों का समांतर माध्य 24 है। उन प्रेक्षणों में प्रत्येक में 6 जोड़ने पर, तत्पश्चात् प्रत्येक को 2.5 से गुणा करने पर, उनका नया समांतर माध्य कितना हो जाएगा?

A

30

B

75

C

35

D

60

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CHAMPION PUBLICATION-2013 TIER-II PAPER(21)-EXERCISE
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  2. A train goes from Ballygunge to Sealdah at an average speed of 20 km/h...

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  3. The arithmetic mean of 100 observations is 24, 6 is added to each of t...

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  4. Sachin Tendulkar has a certain average for 11 innings. In the 12th inn...

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  5. The average of 11 results is 50. If the average of the first six resul...

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  6. By selling 25 metres of cloth a trader gains the selling price of 5 me...

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  7. A sells a suitcase to B at 10% profit. B sells it to C at 30% profit....

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  8. Gita buys a plot of land for Rs.96,000. She sells 2/5 of it at a loss ...

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  9. An article is sold at a gain of 15%. Had it been sold for 27 more,then...

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  10. When 17 balls are sold for 720, the loss is equal to the cost price of...

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  11. Sourav purchased 30 kg of rice at the rate of 10 per kg and 35 kg at t...

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  12. A number increased by 22 1/2% gives 98. The number is- एक संख्या में...

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  13. Two items A and B are sold at a profit of 10% and 15% respectively. If...

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  14. In an examination A got 25% marks more than B. B got 10% less than C a...

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  15. Three sets of 40, 50 and 60 students appeared for an examination and t...

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  16. A certain distance is covered by a cyclist at a certain speed. If a jo...

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  17. The distance between place A and B is 999km. An express train leaves p...

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  18. If a boy walks from his house to school at the rate of 4 km per hour, ...

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  19. Two trains are running 40km/h and 20 km/h respectively, in the same di...

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  20. The compound interest ₹ 5000 for 3 years at 10% will amount to- रु 5...

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