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A and B each working alone can do a work...

A and B each working alone can do a work in 15 days and 25 days respectivley. They started the work together, but B left after some time and A finished the remaining work in 7 days. After how many days form the start did B leave?
A और B अकेले किसी काम को क्रमशः 15 और 25 दिन में कर सकते है, उन्होंने मिलकर काम शुरू किया परन्तु B कुछ समय बाद चला जाता है, और A शेष काम को 7 दिन मे समाप्त करता है। प्रारंभ में B ने कितने दिनों बाद काम छोंड दिया?

A

7

B

9

C

3

D

5

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CHAMPION PUBLICATION-2012 TIER-II PAPER(22)-EXERCISE
  1. A and B can complete a job in 24 days working together. A alone can co...

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  2. In a factory, there are equal number of women and children. Women work...

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  3. A and B each working alone can do a work in 15 days and 25 days respec...

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  4. A and B started a business with Rs. 20000 and Rs. 35000 respectively. ...

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  5. A can complete a work in 20 days and B, in 30 days. A worked alone for...

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  6. A pipe can fill a cistern in 12 minutes and another pipe can fill it i...

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  7. Brothers A and B had some savings in the ratio 4 : 5 . They decided to...

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  8. The taxi charges in a city contain fixed charges and additional charge...

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  9. The marks of 3 students A, B and C are in the ratio 10:12:15. If the m...

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  10. The average of the test scores of a class of 'm' students is 70 and th...

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  11. The average salary per head of all workers of an institution isर 60. T...

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  12. A cricketer played 80 innings and scored an average of 99 runs. His sc...

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  13. A man spends an average of र1694. 70 per month for the first 7 month a...

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  14. A and B undertake to do a piece of work for ₹ 2,200. A alone can do it...

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  15. By selling an article at 80% of its marked price, a trader makes a los...

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  16. By selling an umbrella for ₹ 30,a shopkeeper gains 20%. During a clea...

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  17. What is the maximum percentage discount (approximately) that a merchan...

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  18. A shopkeeper marks the prices at 15% higher than the original price. D...

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  19. From a vessel containing 100l of wine, 10l are drawn out and an equal ...

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  20. From each of two given numbers, half the smaller number is subtracted....

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