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Time taken by 3 Girl and 2 Boys to complete a work is 4 days
the work done 5 girl is 7 days more than work done by 4 bo

By Josephine

Time taken by 3 Girl and 2 Boys to complete a work is 4 days
the work done 5 girl is 7 days more than work done by 4 boys. The number of days in
which work is completed by a boy and girl working together is? ​

About the author
Josephine

6. The factors of 4y2 – 12y + 9 is:
A. (2y+3)2
B. (2y-3)2
C. (2y-3)(2y+3)
D. None of the above​

37 verity
for each
commun tutivity of addition of nationel numbers
of following pair of rational number
-1 and

1 thought on “<br />Time taken by 3 Girl and 2 Boys to complete a work is 4 days<br />the work done 5 girl is 7 days more than work done by 4 bo”

  1. Given :– Time taken by 3 Girl and 2 Boys to complete a work is 4 days . The work done by 5 girl is 7 days more than work done by 4 boys.

    To Find :– The number of days in which work is completed by a boy and girl working together is ?

    Answer :–

    Let us assume that,

    • Efficiency of a girl = G unit/day .
    • Efficiency of a boy = B unit/day .

    so,

    → Total work = 4 * (3G + 2B) units .

    now,

    → 5G completes the total work in = {(12G + 8B)/5G} days .

    and,

    → 4B completes the total work in = {(12G + 8B)/4B} days .

    A/q,

    → {(12G + 8B)/5G} – {(12G + 8B)/4B} = 7

    → (48GB + 32B² – 60G² + 40GB)/20GB = 7

    → 32B² – 60G² + 88GB = 140GB

    → 4(8B² – 15G²) = 140GB – 88GB

    → 8B² – 15G² = 13 .

    given data is incorrect to solve the problem .

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