If p men working p hours per day for p days produce p units of work, then the units of work produced by n men working n hours a day for n days is….

P^{2}/n^{2} | ||

P^{3}/n^{2} | ||

N^{2}/p^{2} | ||

N^{3}/p^{2} |

12 men and 16 women together can complete a work in 4 days. It takes 80 days for one man alone to complete the same work, then how many days would be required for one woman alone to complete the same work?

140 days | ||

160 days | ||

145 days | ||

158 days |

If 8 men can reap 80 hectares in 24 days, then how many hectares can 36 men reap in 30 days?

350 | ||

400 | ||

425 | ||

450 |

A tyre has 2 punctures. The first puncture alone would have made the tyre flat in 9 minutes and the second alone would have done it in 6 minutes. If air leaks out at a constant rate, how long does it take both the punctures together to make it flat?

1 ½ mins | ||

3 1/2 mins | ||

3 3/5 mins | ||

4 1/4 mins |

A cistern can be filled by two supply pipes in 20 mins and 30 mins respectively. But a waste pipe can empty it in an hour. Both the supply pipes were opened together to fill the empty cistern, but by mistake the waste pipe was also open. How much later was the waste pipe closed, if the cistern is filled in 14 mins?

6 mins | ||

8 mins | ||

10 mins | ||

12 mins |

A can do a piece of work in 12 days and B in 15 days. They work together for 5 days and then B left. The days taken by A to finish the remaining work are….

3 | ||

5 | ||

10 | ||

12 |

A man, a woman and a boy together finish a piece of work in 6 days. If a man and a woman can do the work in 10 and 24 days respectively, then days taken by a boy to finish the work are…

30 | ||

35 | ||

40 | ||

45 |

A can do a piece of work in 6 days, B in 10 days and C in 15 days. They jointly complete the work and earn Rs 300. The sum of their wages for 2 days is….

Rs 120 | ||

Rs 180 | ||

Rs 200 | ||

Rs 160 |

A and B together can complete a job in 8 days. Both B and C, working alone can finish the same job in 12 days. A and B commence work on the job, and works for 4 days, whereupon A leaves. B continues for 2 more days and then leaves too. C now starts working and finishes the job. How many days did C require?

4 | ||

5 | ||

8 | ||

3 |

If 8 men or 12 boys can do a piece of work in 16 days, the number of days required to complete the work by 20 men and 6 boys are….

5 1/3 | ||

6 1/3 | ||

8 1/3 | ||

7 1/3 |