**Q1. A and B could do a piece of work in 12 days and 20 days respectively. Find the number of days taken by them to complete 2/3rd of the work together. (in days)**

(a)10

(b)2

(c)5

(d)8

(e)12

**Q2. A work is completed by P and Q together in 30 days. When a third person R joined them, then the work is completed in 18 days. In how many days, the work is completed by R alone? (in days)**

(a) 25

(b) 20

(c) 45

(d) 30

(e) 15

**Q3. The pipe A could fill a tank in 24 hours and the ratio of efficiency of A to B is 2:3. Find the total time taken by both of them together to fill half quantity of the tank completely. (in hours)**

(a)12.8

(b)10.2

(c)12.4

(d)4.8

(e)9.6

**Q4. A tank is normally filled in 30 hours but due to a leak in it, it takes 6 hours more to be filled. If the tank is completely filled, then the leak will empty it in? (in hours)**

(a) 60

(b) 150

(c) 90

(d) 120

(e) 180

**Q5. Anil & Bhuvan can do a work in 18 days when working together while Bhuvan alone does it in 30 days. In what time the work will be finished if each Anil & Bhuvan completes half of the work? (in days) **

(a) 32.5

(b) 37.5

(c) 28.5

(d) 22.5

(e) 42

**Q6. If pipe A alone and pipe B alone can fill a tank in 40 min and 60 min respectively and pipe C alone can empty it in 20 min. If the tank is completely filled, then find the time taken to empty the tank if all the three pipes are opened simultaneously? **

(a) 120 min

(b) 80 min

(c) 100 min

(d) 60 min

(e) 40 min

**Q7. A can complete a work in 30 days while B can complete the same work in 24 days. With the help of C, the work is completed in 12 days. In how many days can C alone complete the work? (in days)**

(a) 80

(b) 120

(c) 132

(d) 60

(e) 144

**Q8. P and Q could do a piece of work in 10 days and 12 days respectively. If P, Q and R could do that same work in 4 days, then find the number of days taken by P and R working together to finish the same work? (in days)**

(a)6

(b)12

(c)8

(d)4

(e)16

**Q9. There are two filling pipes X and Y, if X fills the tank in 20 hours and Y is 300% more efficient than X, then find the time taken by both pipes to completely fill the tank? (in hours)**

(a)12

(b)16

(c)4

(d)8

(e)18

**Q10. Anshu completes 25% of work in 5 days but due to lack of time, Himanshu joins Anshu and they together complete the remaining work in 3 days. Find the number of days Himanshu would take to complete the same work alone? (in days)**

(a)2.5

(b)12

(c)5

(d)8

(e)10

**Solutions**

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