Q1. A can do a piece of work in 21days B is 50 more efficient than A C is twice efficient than B A started the work alone and worked for some days and left the work then B and C joined together and completed the work in 2 days Then how many days does A worked alone

Q2. A can type 100 letters in 5 minutes B and C typing together can type 50 letters in 2 minutes If all of them working together then can type 90 letters in how many minutes

Q3. If 56 men can do a piece of work in 42 days then in how many days will 48 men complete the same work

Q4. If P can do 1 3 of the work in 5 days and Q can do of the work in 6 days then how much money will Q get if they were paid a total of 390 ruppee

Q5. A contract is to be completed in 48 days and 125 men were set to work each working 9 hours a day After 28 days 3 7 of the work is completed How many additional men may be employed so that the work may be completed in time each man now working 10 hours day