A) 8 hrs 45 min | B) 8 hrs 42 min |

C) 8 hrs | D) 8 hrs 34 min |

Explanation:

Number of pages typed by Adam in 1 hour = = 6

Number of pages typed by Smith in 1 hour = = 8

Number of pages typed by both in 1 hour = (6 + 8) = 14

Time taken by both to type 110 pages = (120 * 1/14) = 8 = 8 hrs 34 min.

A) 50 days | B) 48 days |

C) 47.5 days | D) 49 days |

Explanation:

50 men can build a tank in 40 days

Assume 1 man does 1 unit of work in 1 day

Then the total work is 50×40 = 2000 units

50 men work in the first 10 days and completes 50×10 = 500 units of work

45 men work in the next 10 days and completes 45×10 = 450 units of work

40 men work in the next 10 days and completes 40×10 = 400 units of work

35 men work in the next 10 days and completes 35×10 = 350 units of work

So far 500 + 450 + 400 + 350 = 1700 units of work is completed and

remaining work is 2000 - 1700 = 300 units

30 men work in the next 10 days. In each day, they does 30 units of work.

Therefore, additional days required =

Thus, total 10+10+10+10+10 = 50 days required.

A) 10 days | B) 15 days |

C) 20 days | D) 5 days |

Explanation:

After 10 days, the remaining food would be sufficient for the 1000 students for 20 more days

If 1000 more students are added, it shall be sufficient for only 10 days (as the no. of students is doubled, the days are halved).

A) 4:5 | B) 3:4 |

C) 4:3 | D) 2:3 |

Explanation:

(2018) men can complete the work in in one day.

one man's one day work =

(1815) women can complete the work in 1 day

1 woman's one day work =

So, required ratio = = 4:3

A) 5.5 days | B) 6 days |

C) 4.2 days | D) 5 days |

Explanation:

L's 10 days work =

Remaining work =

Now, work is done by K in one day

work is done by K in

A) Option A | B) Option B |

C) Option C | D) Option D |

Explanation:

Raghu can complete the work in (129)hrs = 108 hrs.

Arun can complete the work in (811)hrs = 88 hrs.

Raghu's 1 hrs work = and Arun's 1 hrs work =

(Raghu + Arun)'s 1 hrs work =

So, both Raghu and Arun will finish the work in

Number of days of 12 hours each= = .