Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

A boy walks along the three edges of an equilateral triangle at average speeds of 5 km/h, 9 km/h and 9 km/h. What is the average speed along the whole journey?

**A**

$7{2/19}$ kmph.

**B**

$8{5/9}$ kmph.

**C**

$5{11/21}$ kmph.

**D**

$9{1/7}$ kmph.

**Soln.**

**Ans: a**

Let the edge of the triangle be L. Total distance travelled = 3L. Time taken = $L/5 + L/9 + L/9$. So overall average speed = ${3L}/{L/5 + L/9 + L/9}$ which simplifies to ${135/19}$, which is same as: $7{2/19}$ km/h.

### Question 2

Speeds of A and B are in the ratio 3 : 1. What is the ratio of the times that they will take to cover a distance of 100 km?

### Question 3

Two trains start simultaneously. The first train moves from Jammu to Tawi, whereas the second train moves from Tawi to Jammu. After they meet at a point in between, they respectively take 4 hours and 9 hours to reach their destinations. What is the ratio of their speeds?

### Question 4

An aircraft was on a 1360 km journey. Its engine developed a snag so it had to slow down. It's average speed reduced by 5km/h, as a result of which it reached its destination late by 1 hour. What was the actual duration of the journey?

### Question 5

Speeds of A and B are in the ratio 5 : 8. What is the speed of A if B can cover a distance of 32 Km in 1 hour?

### More Chapters | See All...

Passwords and Inputs | Clocks and Calendars | Ranking Test | Analogies | Distance and Time | Basic Simplification | Problems on Numbers | Course of Action | Simple Interest | Matrix Test | More...

This Blog Post/Article "Distance and Time Quiz Set 004" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2017-05-17.