10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children t

Question

10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How
many days will 5 women and 10 children take to complete the work?
(A) 3 (B) 5
(C) 7 (D) 9

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Gabriella 2 months 2021-10-04T02:56:12+00:00 2 Answers 0 views 0

Answers ( )

    0
    2021-10-04T02:57:21+00:00

    Answer :- Option “ C ” right

    Question

    10 women can complete a work in 7 days and 10 children take 14 days to complete the work.How many days will 5 women and 10 children take to complete the work?

    Given

    • 10 women can complete a work in 7 days.
    • 10 children take 14 days to complete the work.

    Find

    • How may days will 5 women and 10 children take to complete the work ?

    Solution

    • Let women be x
    • children= y

    → 10x × 7= 10y × 14

    → x : 2 y

    \sf → \frac{x}{y}=2/1—eq(i)

    \sf→ 10 x×7=(5x×10y)z

    • ★ Let z be the number of days required

    So from eq(i)

    \sf 10×2×7= (5×2+10×1)z

    \sf 140=20z

    \sf z = \dfrac{\cancel{140}}{\cancel{20}}

    \sf z =7 days

    Hence

    • Number of days required = 7
    0
    2021-10-04T02:57:23+00:00

    Answer:

    c) 7 is the correct answer

    MARK MY ANSWER AS BRINLIEST AND THANK MY ANSWER

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