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Grade 8 - Mathematics9.9 Word Problems on Time and Work - II

 Directions: Solve the following problems. Also write at least 5 examples of your own.
 Q 1: Kate and Cathy can do a piece of work in 30days and 20days respectively. After Kate has worked alone for 5days Cathy join her, both of them complete the work. Find the number of days Kate and Cathy have worked together.8days6days10days7days Q 2: Matt and Peter can do together a piece of work in 20 days. After they have worked together for 12 days Matt stops and Peter completes the remaining work in 10 days. In how many days Peter complete the work separately.25days30days15days20days Q 3: Adam can do 5/8 of a piece of work in 20days. He works for 2days when John joins him. They work together and complete the work in 20days. In how many days can John alone can do the whole work.60days62days64days68days Q 4: Two taps can fill a tub in 24min. and 32min. separately. Another tap can empty the full tub in 16min. If they are opened together at the same time when will the tub be full.46min.96min.86min.100min. Q 5: Two taps can fill a tub in 5min. and 7min. respectively. A pipe can empty it in 3min. If all the three are kept open simultaneously when will the tub be full.100min.95min.105min.110min. Q 6: Tow taps can fill a tub in 10min. and 15min. respectively. A pipe can empty it in 8min. If all the three are kept open simultaneously when will the tub be full.26min.28min.20min.24min. Question 7: This question is available to subscribers only! Question 8: This question is available to subscribers only!