Given:
Rina can complete a piece of work in = 6 days
Seema can do the same work in = 9 days
Formula Used:
Work = time × efficiency
Solution:
Total work = LCM of 6 and 9 = 18 unit
Efficiency of Rina = = 3
Efficiency of Seema = = 2
Efficiency of Rina and Seema together = 3 + 2 = 5
Time taken by them to complete whole work = = 3.6 days.
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Suggested Test Series
Suggested Test Series
A can lay railway track between two given stations in 20 days and B can do the same job in 12 days. With the help of C, they did the job in 2 days only. Then, C alone can do the job in
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Aryan takes 12 hours to mow a large lawn. He and Arman together can mow it in 7 hours. How long will Arman take to mow the lawn if he works alone?
Priya can do a certain piece of work in 30 days. Priya and Varsha can together do the same work in 18 days, and Priya, Varsha and Nisha can do the same work together in 9 days. In how many days can Priya and Nisha do the same work?
Jaya can do a certain piece of work in 30 days. Jaya and Sushma can together do the same work in 21 days, and Jaya, Sushma and Hina can do the same work together in 14 days. In how many days can Jaya and Hina do the same work together?
Ravi can complete one-fourth of the total work in 15 days, Chavi can complete one-third of the total work in 18 days, Dhani can complete half of the total work in 24 days. In how much time can Ravi, Chavi and Dhani complete three-fourth of the work together?
A and B together can do a work in 2T days and A alone can do the same work in 10 days. If B alone can do the work in 5T days, then find the value of T?
