– If ‘A’ can do piece of work in 30 days while ‘B’ alone can do it in 40 days. In how many days can A & B complete this work t

Question

– If ‘A’ can do piece of work in 30 days while ‘B’
alone can do it in 40 days. In how many days
can A & B complete this work together.
a) 16 1/7.
b) 171/7
c) 18 1/7
d) 19 1/7​

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Luna 3 weeks 2021-11-06T10:22:47+00:00 1 Answer 0 views 0

Answers ( )

    0
    2021-11-06T10:24:08+00:00

    Answer:

    A –

    one day work =1/30

    B-

    one day work =1/40

    A and B

    one day work = 1/30+1/40=7/120

    no.of days both will take together to complete this work = 120/7= days

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