Q1. P and Q together can complete a job in 90days Q and R takes 60 days to complete the same work and P and R will take 45 days to complete the same work How much time will P Q and R will take to complete the work together

Q2. 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

Q3. Anil can do a work in 15 days while Sunil can do it in 25 days How long will they take if both work together

Q4. A B and C can complete a work in 12 15 and 25 days respectively A started the work C and B joined him after 3 and 6 days respectively How much work did A complete

Q5. 15 men can complete a work in 10 days while 20 boys can complete the same work in 15 days how many days will 10 men and 10 boys together take to complete the same work