Free Practice Questions for Time-and-work in Maths

Practice questions here, for every subject and every exam. Unlimited questions for unlimited attempts, given with answers and explanations.

Question 141:

A can do a piece of work in 25 days and B can do the same work in 20 days. They started the work together but $B$ left after 4 days and $A$ continued to work . In how many days will the entire work be completed?

Question 142:

Anuj’s efficiency is 150% of Vinod efficiency. If Anuj can complete a piece of work in 10 days, then how much time (in days) will they both take to complete the same work?

Question 143:

A completes two-third part of a work in 16 days, and the remaining work is completed by B alone. The entire work is completed in 21 days. A and B together will complete $65 \%$ of the same work in:

Question 144:

$A$ can do a piece of work in 15 days, while $B$ can do the same work in 21 days. If they work together, in how many days will the work be completed?

Question 145:

30 men working 8 hours a day can complete a piece of work in 28 days. How many men will be required to complete the same work in 20 days working 10 $\frac{1}{2}$ hours per day?

Question 146:

$\mathrm{A}$ and $\mathrm{B}$ together can do a certain work in 20 days, $\mathrm{B}$ and $\mathrm{C}$ together can do it in 30 days, and $\mathrm{C}$ and $\mathrm{A}$ together can do it in 24 days. B alone will complete $\frac{2}{3}$ part of the same work is:

Question 147:

A can do a work in 40 days and B can do the same work in 50 days. They worked together for 5 days and then B left the work. In how many days will $A$ finish of remaining work?

Question 148:

A can do a piece of work in 45 days. He works for 30 days and leaves. If B completes the remaining work in 5 days, then in how many days can B alone complete the entire work?

Question 149:

Pipe A is a filling pipe, while $\mathrm{B}$ and $\mathrm{C}$ are emptying pipes. Pipe A alone can fill a tank in 10 hours and pipe $\mathrm{C}$ alone can empty the full tank in 24 hours. If all three pipes are opened together, the tank is completely filled in 40 hours. In how many hours can pipe $B$ alone empty two-third part of the tank?

Question 150:

18 persons can complete a work in 15 days when they work 6 hours a day. The time (in days) taken by 12 persons working 10 hours a day to complete the same work, is:

Question 151:

$\mathrm{A}$ and $\mathrm{B}$ can do a piece of work in 12 days and 20 days respectively. They both work together for 6 days. The remaining work is completed by $C$ alone in 12 days. In how many days will $A$ and $C$ together complete the $\frac{2}{3}$ part of the work?

Question 152:

$X$ and $Y$ together can do a piece of work in 8 days. If $X$ alone can do the same work in 40 days, then in how many days will $Y$ do the work alone?

Question 153:

A can do $33 \frac{1}{3} \%$ of a work in 10 days and B can do $66 \frac{2}{3} \%$ of the same work in 8 days. Both worked together for 8 days. C alone completed the remaining work in 3 days. $A$ and $C$ together will complete $\frac{5}{6}$ part of the original work in:

Question 154:

$\text{F}$ and $\text{M}$ together can do a piece of work in 8 days. $\text{F}$ alone can do the same work in 12 days. In how many days can $\text{M}$ alone do the same work?

Question 155:

A, B and C can do a piece of work in 10,12 and 15 days, respectively. In how many days can B do the work, if he is assisted by $A$ and $C$ together on alternate days?

Question 156:

A can do $33 \frac{1}{3} \%$ of a work in 10 days and B can do $66 \frac{2}{3} \%$ of the same work in 8 days. Both worked together for 8 days. C alone completed the remaining work in 3 days. $A$ and $C$ together will complete $\frac{5}{6}$ part of the original work in how many days:

Question 157:

Mohan and Ramesh together can complete a work in 15 days. Mohan is 50% more efficient than Ramesh. Find the time taken by Mohan alone to complete the work.

Question 158:

$\frac{4}{11}$ part of a bucket is filled in 5 minutes. Find the time taken to fill the remaining bucket.

Question 159:

$A$ can do a piece of work in 18 days. $A$ and $B$ working together can do the same work in 8 days, while $B$ and $C$ working together can do the same work in 6 days. In how many days can $A, B$ and $C$ working together do the same work?

Question 160:

$X$ and $Y$ together can do a piece of work in 8 days. If $X$ alone can do the same work in 40 days, then in how many days will $Y$ do the work alone?

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