$24$ men working at $8$ hours per day can do a piece of work in $15$ days. In how many days can $20$ men working at $9$ hours per day do the same work?

14

days

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16

days

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13

days

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17

days

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Solution

The correct option is B $16$ days
$24$ men working $8 h r s$ / day can do a piece in $15$ days
$∴$ Total work units $= 24 \times 8 \times 15$
$= 2880$
No.of days required by $20$ men, working at
a $h r s / d a y = \frac{2880}{20 \times 9}$
$16 d a y s$

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24 men working at 8 hours per day can do a piece of work in 15 days. In how many days can 20 men working at 9 hours per day do the same work?

The correct option is B 16 days24 men working 8 hrs / day can do a piece in 15 days ∴ Total work units =24×8×15=2880No.of days required by 20 men, working at a hrs/day=288020×916 days

$24$ men working at $8$ hours per day can do a piece of work in $15$ days. In how many days can $20$ men working at $9$ hours per day do the same work?

The correct option is B $16$ days
$24$ men working $8 h r s$ / day can do a piece in $15$ days
$∴$ Total work units $= 24 \times 8 \times 15$
$= 2880$
No.of days required by $20$ men, working at
a $h r s / d a y = \frac{2880}{20 \times 9}$
$16 d a y s$