Q:

A) 90 km/h | B) 160 km/h |

C) 67.5 km/h | D) None of these |

Answer: B) 160 km/h

Explanation:

Explanation:

$\frac{{s}_{1}}{{s}_{2}}=\sqrt{\frac{{t}_{2}}{{t}_{1}}}$

$\Rightarrow \frac{120}{{s}_{2}}=\sqrt{\frac{9}{16}}=\frac{3}{4}$

$\Rightarrow $${s}_{2}=160km/h$

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.**

3
301

Q:

A) 60 kmph | B) 90 kmph |

C) 100 kmph | D) 120 kmph |

1
279

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.**

2
292

Q:

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

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

1
409

1
304

Q:

A) 11.00 am | B) 12.30 pm |

C) 11.30 pm | D) 12.00 pm |

0
345

5
355

Q:

A) 100 km | B) 150 km |

C) 200 km | D) 250 km |

3
486