Parvesh is three times as efficient as Dinesh. Parvesh takes 20 days less than Dinesh to complete a book. If both of them work together, then in how many days the book will be completed?
Vikram and Vivek can finish a work in 50 days. They worked together for 20 days and then left. How much work has been done by them?
9 women can complete a work in 50 days. If more 6 women were added to them, how many days before the work can be completed?
In a camp 180 students had ration for 20 days. How many students should leave the camp if the ration should last for 25 days?
Smita can finish a work in 12 days and Sam can finish the same work in 9 days. After working together for 4 days they both leave the job. What is the fraction of unfinished work?
X is 25% more efficient than Y. If Y alone can make a chair in 10 days, then X alone can make the chair in how many days?
M can complete 3/4 part of a work in 12 days and N can complete 2/7 part of the same work in 8 days. In how many days will both complete 11/14 part of the total work?
P and Q together can make a door in 12 days. They started the work together but after 8 days P left the work. The remaining work is completed by Q alone in 7 more days. In how many days can P alone complete the entire work?
30 women do half of the total work in 30 days. How many more women will be required to complete the remaining work in 10 days?
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