Q:

A) 1/5 | B) 1/6 |

C) 1/7 | D) 1/8 |

Answer: B) 1/6

Explanation:

Explanation:

Total work is given by L.C.M of 72, 48, 36

Total work = 144 units

Efficieny of A = 144/72 = 2 units/day

Efficieny of B = 144/48 = 3 units/day

Efficieny of C = 144/36 = 4 units/day

According to the given data,

2 x p/2 + 3 x p/2 + 2 x (p+6)/3 + 3 x (p+6)/3 + 4 x (p+6)/3 = 144 x (100 - 125/3) x 1/100

3p + 4.5p + 2p + 3p + 4p = 84 x 3 - 54

p = 198/16.5

p = 12 days.

Now, efficency of D = (144 x 125/3 x 1/100)/10 = 6 unit/day

(C+D) in p days = (4 + 6) x 12 = 120 unit

Remained part of work = (144-120)/144 =** 1/6.**

Q:

A) 12 days | B) 8 days |

C) 14 days | D) 16 days |

1
198

2
79

Q:

A) 16.5 days | B) 13 days |

C) 10 days | D) 12.5 days |

4
111

3
203

4
195

Q:

A) 112days | B) 3 days |

C) 4 days | D) 2 days |

1
246

0
178

Q:

A) 100 days | B) 120 days |

C) 72 days | D) 64 days |

0
297