A water filling Pipe P is 5 times faster than second Pipe Q. If P fills a cistern in 30 minutes. How long will it take to fill the tank, when both the pipes are kept in operation simultaneous?

A water filling Pipe P is 5 times faster than second Pipe Q. If P fills a cistern in 30 minutes. How long will it take to fill the tank, when both the pipes are kept in operation simultaneous?
1). 27 min
2). 26 min
3). 28 min
4). 25 min

---

Join Telegram Group

Other Questions

1. A is four times efficient as B. B started the work and after 6 days, A joined him. If the whole work was completed in 12 days, in how many days A alone can finish the whole piece of work ?

2.  A group of workers was put on a job. From the second day onwards, one worker was withdrawn each day. The job was finished when the last worker was withdrawn. Had no worker been withdrawn at any stage,

3. A and B together do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?

4. Five women can do a work in thirty six days. If the ratio between the capacity of a man and a woman is 3 : 1, then find how may days it will take 5 men to complete the same work?

5.  Two persons A and B can complete a piece of work in 24 days, while A alone can do the same piece of work in 40 days. In how many days can B alone finish the work ?

6. A, B and C can independently finish a piece of work in 18 days, ?x? days and 27 days respectively. A and C started working together and after 6 days B replaced both of them. If B could finish the remaining work in 16 days, what is the value of ?x? ?

7. If 12 men or 20 women or 36 children can do a work in 12 months, then 5 men, 10 women and 15 children can do half of the work in

8.  A and B can do a piece of work in 6 2/3 days and 5 days respectively. They work together for 2 days and then A leaves. In how many days after that B will complete the work alone.

9. Three men A, B and C working together can do a Job in 6 hours less time than A alone, in 1 hour less time than B alone and in one half the time needed by C when working alone.Then A and B together can do the Job in

10. 40 men can complete a work in 40 days. They started the work together. But at the end of each 10th day, 5 men left the Job. The work would have been completed in