download Mastguru Android App

Question Detail

A does a work in 10 days and B does the same work in 15 days. In how many days they together will do the same work ?

  • 5 days
  • 6 days
  • 7 days
  • 8 days
Similar Questions :

1. A completes 80% of a work in 20 days. Then B also joins and A and B together finish the remaining work in 3 days. How long does it need for B if he alone completes the work?

  • \begin{aligned} 35\frac{1}{2} \end{aligned}
  • \begin{aligned} 36\frac{1}{2} \end{aligned}
  • \begin{aligned} 37\frac{1}{2} \end{aligned}
  • \begin{aligned} 38\frac{1}{2} \end{aligned}

2. A man can do a piece of work in 5 days, but with the help of his son he can do it in 3 days. In what time can the son do it alone ?

  • \begin{aligned} 7\frac{1}{2}days \end{aligned}
  • \begin{aligned} 6\frac{1}{2}days \end{aligned}
  • \begin{aligned} 5\frac{1}{2}days \end{aligned}
  • \begin{aligned} 4\frac{1}{2}days \end{aligned}

3. A is thrice as good a workman as B and takes 10 days less to do a piece of work than B takes. B alone can do the whole work in

  • 15 days
  • 10 days
  • 9 days
  • 8 days

4. A can do a job in 16 days, B can do same job in 12 days. With the help of C they did the job in 4 days. C alone can do the same job in how many days ?

  • \begin{aligned} 6\frac{1}{2}days \end{aligned}
  • \begin{aligned} 7\frac{1}{2}days \end{aligned}
  • \begin{aligned} 8\frac{3}{5}days \end{aligned}
  • \begin{aligned} 9\frac{3}{5}days \end{aligned}

5. A piece of work can be done by 6 men and 5 women in 6 days or 3 men and 4 women in 10 days. It can be done by 9 men and 15 women in how many days ?

  • 3 days
  • 4 days
  • 5 days
  • 6 days
Read more from - Time and Work Questions Answers
Post a comment

  • Sujith 8 years ago

    one pump can fill a tank in 4 hrs another will vacate in 5 hrs. In what time will the tank be filled when both the pumps work simultaneously?