Q1. A candle of 8 cm long burns at the rate of 7 cm in 7 hour and another candle of 10cm long burns at the rate of 6 cm in 3 hour What is the time required by each candle to remain of equal lengths after burning for some hours when they start to burn simultaneously with uniform rate of burning

Q2. A B C and D can do a piece of work in 20 days If A and B can do it together in 50 days and C alone in 60 days find the time in which D alone can do it

Q3. 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

Q4. A group of labourers promise to do a work in 12 days but 5 of them do not turn up If the rest of the group do the work in 18 days find the original number of men

Q5. 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