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6 persons can complete a work in 7 days....

6 persons can complete a work in 7 days. Let's find how many persons will be required to finish the work in 21 days. In matheatical language, the problem may be stated as

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JNAN PUBLICATION-REVISION OF PREVIOUS KNOWLEDGE-EXAMPLE
  1. Let's simplify : 2.5 xx 6 div 0.5

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  2. If the cost of frac(9^th) (10) part of a certain property is Rs. 6543 ...

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  3. 6 persons can complete a work in 7 days. Let's find how many persons w...

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  4. A wheel turns 55 times to cover distance of 77 m. Let's calculate, how...

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  5. Diptarka learns swimming once a week. Let's calculate how many days he...

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  6. Kavita needs 120 sheets of paper. There are 24 sheets in each bundle,...

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  7. If the cost of a dozen eggs is Rs. 48. Let's find the cost of 32 eggs.

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  8. Working 5 hours a day, a work can be completed in 30 days. Let's find,...

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  9. The cost of frac(5)(7) part of property is Rs. 2825. Let's find the co...

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  10. There were stored food of 48 soliders for 7 weeks in a camp. If 8 more...

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  11. In a ship, there were stored food for 50 sailors for 16 days. After 10...

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  12. 20- men, decided to complete the repairing work, of a house in 30 days...

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  13. 25 farmers take 12 days to plough 15 bighas of land. Then let's find, ...

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  14. 30 students of my class were present. Total number of students in our ...

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  15. Let's find 12frac(1)(2) % of Rs. 2 is equal to how much paise.

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  16. How much is 30% of 840 grams.

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  17. How much is 8% of Rs. 25

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  18. What percent is 55 germs of 5kg.

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  19. What percent is Rs. 1.25 or Rs 5

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  20. What percent is 16 L. of 1000 L.

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