Q:

A) 15 hours | B) 16 hours |

C) 17 hours | D) 18 hours |

Answer: C) 17 hours

Explanation:

Explanation:

In this type of questions we need to get the relative speed between them,

The relative speed of the boys = 5.5kmph – 5kmph

= 0.5 kmph

Distance between them is 8.5 km

Time = Distance/Speed

Time= 8.5km / 0.5 kmph = 17 hrs

Q:

A) 19 km | B) 15 km |

C) 12 km | D) 20 km |

Answer & Explanation
Answer: D) 20 km

Explanation:

Explanation:

Let total distance be **2D**.

He walks half distance i.e, (2D/2) = 'D' distance with **3 kmph** and

The next 'D' with** 6 kmph.**

Using formula,

**Time = Distance/speed**

(D/3) + (D/6) = 5

D =10 ,

Hence,** Total distance 2D = 20 kms.**

7
489

Q:

A) 60 kmph | B) 90 kmph |

C) 100 kmph | D) 120 kmph |

2
475

Q:

A) 24 | B) 28 |

C) 32 | D) 30 |

Answer & Explanation
Answer: D) 30

Explanation:

Explanation:

Difference in time taken = 4min = **1/15 hr**

Let the total distance covered by person be **D km**.

Then,

⇒ **D/40 – D/45 = 1/15**

⇒ 5D = 120

⇒ D = 24 km

∴ Distance covered by person is **24 km.**

4
473

Q:

A) 1 hour | B) 1 hour 30 min |

C) 2 hours | D) 2 hours 30 min |

2
597

1
442

Q:

A) 11.00 am | B) 12.30 pm |

C) 11.30 pm | D) 12.00 pm |

0
488

5
541

Q:

A) 100 km | B) 150 km |

C) 200 km | D) 250 km |

3
671