Notes, Exercises, Videos, Tests and Things to Remember on Time and Work
Please scroll down to get to the study materials.
The unitary method is a method or technique in an algebra for solving a class of problems in variation.Time and work are also related to the unitary method. Here, we calculate the part of a work in unit time and also calculate the time taken to do a work.
A and B can do a piece of work in 15 and 20 days respectively. After working 4 days together, B left and A complete the remaining works. How any days the remaining work completed?
A and B can finish a piece of work in 16 and 24 days respectively.They worked together for 6 days and A left the job. In how many days B can complete the remaining work?
Sakar can do a work in 24 days and Bivas can do the same work in 30 days. They worked together for 8 days then Sakar goes away. In how many days will Bivas finish the remaining work ?
Shiva and Bishnu can do a piece of work in 12 days. Shiva alone can do it in 18 days. Both start the work together but Shiva leaves after 6 days. How long Bishnu work to finish the remaining work ?
Beena and Meena together can do a piece of work in 12 days. Meena alone can finish the work in 18 days. If she leaves after working alone for 6 days, in how many days will Beena finish the remaining work?
Bimila and Sharda can do a piece of work in 8 days. Bimala alone can do that work in 12 days. If Bimila worked alone for 4 days and stopped to do, how long will Sharda take to complete the remaining work?
A and B can finish a piece of work in 40 days. after they worked for 25 days ,B left.If a can finish the remaining work in 45 days, how long will B alone take to finish the whole work?
A can do a piece of work in 18 days and B in 24 days. They both worked together and after some days A left. If B finished the remaining work in 3 days, for how long did A work together?
A and B can do a piece of work in 30 and 45 days respectively. They work it together for some days then B leaves. If B leaves 5 days before the completion of the work, for how many days did they work together ?
A and B together can finish a work in 36 days. If A can do as much in 4 days as B can do it 9 days, how long would each take to do work alone?
X, Y and Z can do a piece of work in 20 days working together.Y can do the same work in 60 days and Z can do it in 120 days. In how many days X can do the whole work alone?
A, B and C can do a piece of work in 30, 40, and 60 days respectively. All of them started the work together but B left after working for 8 days. In how many days A and C can complete the remaining work?
A man undertakes to do a certain job in 32 days. He hires 12 men for the job. At the end of 8 days, only one-fifth of the work was completed. How many extra men must be employed in order to complete the work in time?
10 workers can do a work in 20 days, when they start the work, after how many days should 5 workers leave the work so that the work would be finished in 35 days?