A certain number of persons can complete a work in 100 days. If there be 10 persons less, it would have taken 10 days more for the work to be completed. The number of persons in the beginning was
A is thrice as good a workman as B and so takes 60 days less than B for doing a job.The time in which they can do the job together is
15 men take 21 days of 8 hours each to do a piece of work. How many days of 6 hours each would 21 women take, if 3 wonen do as much work as 2 men ?
Seven men, five women and eight children were given an assignment of distributing 2000 books to students in a school over a period of three days. All of then distributed books on the first day. On the second day two women and three children remained absent and on the third day three men and five children remained absent. If the ratio of the number of books distributed in a day by a man, a woman and a child was 5 : 4 : 2 respective, a total of approximately how many books were distributed on the second day ?
If 9 men working $7 \frac{1}{2}$ hours a day can finish a piece of work in 20 days will be taken how many days will be taken by 12 men, working 6 hours a day to finish the work ? It is being given that 2 men of latter type work as much as 3 men of the former type ?
A man’s basic pay for a 40 hours week is Rs 200. Overtime is paid at 25% above the basic rate. In a certain week, he worked overtime and his total was Rs 300. He therefore, worked for a total of (in hours):
P can complete a work in 12 days working 8 hours a day. Q can complete the same work in 8 days working 10 hours a day. If P and Q work together, working 8 hours a day, in how many days can they complete the work ?
