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Kiran alone can do a piece of work in 15...

Kiran alone can do a piece of work in 15 days and Aman can do the same in 10 days. If they start working together, in how many days can the work be completed?

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The correct Answer is:
6 days
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PEARSON IIT JEE FOUNDATION-RATIO AND ITS APPLICATIONS-SHORT ANSWER TYPE QUESTIONS
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  10. Kiran alone can do a piece of work in 15 days and Aman can do the same...

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  11. If 256 is the third proportional of a and b, where a:b = 3:16, then fi...

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  12. If (15x + 16y)/(25x + 4y) = (7)/(6), then find x:y.

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  13. If m:n = 3:5 and m:r = 2:3, then find n:r.

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  14. The present ages of Pawan and Kalyan are in the ratio of 4:5. The prod...

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  15. Aashritha scored 85, 90, 98, 78, 89, and 70 marks in six different sub...

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  17. P can do a piece of work in 25 days and Q can do the same work in 15 ...

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  18. A certain sum becomes doubled in 5 years. Find the rate of interest.

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  19. A train crosses a pole in 12 s, when it is traveling at 54 km/h. Find ...

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  20. Calculate the amount of Rs. 2500 at 12% per annum for 8 years under si...

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