Time and Work Practice Test 1 with solutions

Question : 23 of 40

Marks: +1, -0

A few children working together can do a piece of work in 18 days. If the number of children employed on the work is made double, how long would they take to complete half of the work?

$4 1/2$ days
$2 1/3$ days
$8 3/4$ days
$6 1/2$ days

Validate

Solution:

Let number of children be x;
Now x children can do the work in 18 days.
Hence, 2x children will do

1/2

of the work in

{18×x}/{2x×2}

9/2

days =

4 1/2

days

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