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A can do a work in 15 days and B in 20 d...

A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is `1/4` b. `1/(10)` c. `7/1` d. `8/(15)`

Answer

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Knowledge Check

  • A can do a work in 15 days and B in 20 days. If they together work on it for 4 days, then the fraction of the work that is left is :

    A
    `8/15`
    B
    `7/15`
    C
    `1/4`
    D
    `1/10`

  • A can do a work in 21 days and B in 42 days. If they work on it together for 7 days, then what fraction of work is left?

    A
    `(1)/(3)`
    B
    `(1)/(4)`
    C
    `(2)/(3)`
    D
    `(1)/(2)`

  • A can do a work in 21 days and B in 42 days. If they work on it together for 7 days, then what fraction of work is left?

    A
    `(1)/(3)`
    B
    `(1)/(4)`
    C
    `(2)/(3)`
    D
    `(1)/(2)`

    • Similar Questions

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