Quantitative Aptitude

Time and Work

2,195 Questions

All Pairwise rates and staged schedules 440 Workers-days-hours chain rule 439 LCM units and efficiency ratios 409 Different worker categories 311 Combined rates and an unknown worker 257 Division of wages 219 Alternate work 110 Opposing rates 10

Time and Work Questions

Multiple choice

Two persons could fit new windows in a house in $3$ days. One of the persons fell ill before the work started. How long days would the job take now?

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Multiple choice

A and B together can do a piece of work in $ 6\dfrac{2}{3} $ days , but B alone can do it in $10$ days. How long will A take to do it alone ?

$12$ days
$20$ days
$25$ days
$28$ days

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Multiple choice

A can do a job in $10$ days and B in $20$ days. They work together but $4$ days before the finish of the job B leaves. Find the total days to finish the job?

$6$
$8$
$12$
$14$

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Multiple choice

A can do a piece of work in $7$ days of $9$ hr each and B can do it in $6$ days of $7$ hr each. How long will they take to do it working together $\displaystyle \frac{42}{5}$ hr a day?

$3$ days
$4$ days
$4.5$ days
None

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Multiple choice

$A$ can do a work in $15$ days and $B$ in $20$ days. If they work on it together for $4$ days, then the fraction of the work that is left is:

$\cfrac{1}{4}$
$\cfrac{1}{10}$
$\cfrac{7}{15}$
$\cfrac{8}{15}$

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Multiple choice

$A$ alone can complete a work in $16$ days and $B$ alone in $12$ days. Starting with $A$, they work on alternate days. The total work will be completed in.

$12$ days
$13$ days
$13\dfrac{2}{7}$ days
None of these

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Multiple choice

Harpal is thrice as good a workman as Kewal and takes $10$ days less to do a piece of work than Kewal takes, then Kewal can do that work in

$8$ days
$12$ days
$13$ days
$15$ days

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Multiple choice

$8$ men and $12$ boys can finish a piece of work in $10$ days, while $6$ men and $8$ boys can finish it in $ 14 $ days. Find the time taken by one man alone and that by one boy alone to finish that work.

Man: $160$ days. Boy : $190$ days
Man: $140$ days. Boy : $280$ days
Man: $240$ days. Boy : $150 $days
Man: $260$ days. Boy : $200$ days

Reveal answer Fill a bubble to check yourself

Multiple choice

A can finish a work in $18$ days and B can do the same work in $15 $ days. B worked for $10$ days and left the job. In how many days, A alone can finish the remaining work?

$5$ days
$\dfrac{11}{2}$ days
$6$ days
$8$ days

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Multiple choice

$3 $ men and $4$ women do a work in $10$ days as $2$ men and $6$ women do.$ 4$ men and $8$ women starts the same work and after $2$ days only women remains in the work for completing it. How many days are required to complete the work?

$6$ days
$7.5$ days
$8 $ days
$8.5$ days

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Multiple choice

A and B working separately can do a piece of work in $9$ and $12$ days respectively. If they work for a day alternately , A beginning, in how many days the work will be completed ?

$4$ days
$5$ days
$9 $ days
$10$ days

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Multiple choice

A and B can do a piece of work in $6$ days and A alone can do it in $9$ days. The time take by B alone to do the work is _________.

$18$ days
$15$ days
$12$ days
$\displaystyle 7\frac{1}{2}$ days

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Multiple choice

If $36$ men can do a certain piece of work in $25$ days, then $15$ men will do it in __________.

$60$ days
$\displaystyle 10\frac{15}{36}$days
$40$ days
$50$ days

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Multiple choice

I can do a piece of work in 8 days, which can be done by you in 10 days. How long would it take to do it if we work together?

$4\displaystyle\frac{4}{9}$ days
$5\displaystyle\frac{3}{9}$ days
$5\displaystyle\frac{1}{2}$ days
$4\displaystyle\frac{7}{9}$ days

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Multiple choice

$A$ can do a work in $9$ days. If $B$ is $50$% more efficient than $A$, then in how many days can $B$ do the same work?

$13.5$
$4.5$
$6$
$5$

Reveal answer Fill a bubble to check yourself

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