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A can finish a work in 16 days and B
can finish the same work in 20 days.
After A had worked for 4 days, B also
By Amaya

A can finish a work in 16 days and B
can finish the same work in 20 days.
After A had worked for 4 days, B also
joined with A to finish the remaining
work. In how many days will the
remaining work be finished?​

About the author
Amaya

_______ was the direct tax under old regime.

Is its answer ‘tithes’ ?

– Social Studies class 9th NCERT.​


2. Find an integer which when multiplied by 4 and then divided by 9 becomes (-28),



​

2 thoughts on “<br />A can finish a work in 16 days and B<br />can finish the same work in 20 days.<br />After A had worked for 4 days, B also<br”

  1. [tex] \huge \underline \bold \red {Answer:}[/tex]

    6.66 days

    [tex] \huge \underline \bold \red {Explanation:}[/tex]

    Fraction of work done by A in 1day = 1/16

    Fraction of work done by A in 4 days = 4/16 = 1/4

    Fraction of work done by B in 1 day = 1/20

    Fraction of work done by A & B in 1 day = ( 1/16) +(1/20 ) = (20+16)/320

    = 36 /320 = 9/80

    Work remaining = 1- (1/4 ) = 3/4

    No.of days required to complete the work by A & B working together

    = (3/4) /(9/80) = ( 3×80)/(4×9) = 240/36 = 60/9=6.66

    A & B would require 6.66 more days to complete the remaining work .

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