Q:

A) 3 hrs 15 min | B) 3 hrs 45 min |

C) 4 hrs 15 min | D) 4 hrs 1 |

Answer: B) 3 hrs 45 min

Explanation:

Explanation:

Time taken by one tap to fill **half of the tank** = 3 hrs.

Part filled by the four taps in 1 hour =4*1/6 =2/3

Remaining part =$\left(1-\frac{1}{2}\right)=\frac{1}{2}$

$\frac{2}{3}:\frac{1}{2}::1:x$

=> x = $\left(\frac{1}{2}*1*\frac{3}{2}\right)=\frac{3}{4}$

So, total time taken = 3 hrs. 45 mins.

Q:

A) 49 hours | B) 38.5 hours |

C) 42 hours | D) 45.5 hours |

3
617

Q:

A) 3 hours | B) 7.5 hours |

C) 6 hours | D) 9 hours |

0
670

2
498

2
413

0
439

0
467

Q:

A) 90 hrs | B) 86 hrs 40 min |

C) 45 hrs | D) 86 hrs 48 min |

0
530

Q:

A) 4 hrs 25 min | B) 4 hrs 15 min |

C) 4 hrs 40 min | D) 4 hrs |

1
748