61. A can do a piece of work in 12 days and B in 20 days. If they together work on it for 5 days, and remaining work is completed by C in 3 days, then in how many days can C do the same work alone ?
62. A and B work together to complete the rest of a job in 7 days. However,$$\frac{{37}}{{100}}$$ of the job was already done. Also the work done by A in 5 days is equal to the work done by B in 4 days. How many days would be required by the fastest worker to complete the entire work ?
63. A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?
64. A group of workers can complete a piece of work in 50 days, when they are working individually. On the first day one person works, on the second day another person joins him, on the third day one person joins them and this process continues till the work is completed. How many approximate days are needed to complete the work ?
65. A can do a piece of work in 20 days and B in 15 days. With help of C, they finish the work in 5 days. In how many days C alone can do the same work ?
66. Shashi can do piece of work in 20 days. Tanya is 25% more efficient than Sashi. The number of days taken by Tanya to do the same piece of work is = ?
67. 18 men or 36 boys working 6 hours a day can plough a field in 24 days. In how many days will 24 men and 24 boys working 9 hours a day plough the same field ?
68. A can do $$\frac{1}{3}$$ rd of a work in 5 days and B can do the do $$\frac{2}{5}$$ th of this work in 10 days. Both A and B, together can do the work in ?
69. A and B undertake a piece of work for Rs. 250. A alone can do that work in 5 days and B alone can do that work in 15 days. With the help of C, they finish the work in 3 days. If every one gets paid in proportion to work done by them, the amount C will get is ?
70. A is twice as good as B and together they finish a piece of work in 16 days. The number of days taken by A alone to finish the work is = ?
Read More Section(Time and Work)
Each Section contains maximum 100 MCQs question on Time and Work. To get more questions visit other sections.