Correct Answers: | |

Wrong Answers: | |

Unattempted: |

### Question 1

A boy walks along the three edges of an equilateral triangle at average speeds of 7 km/h, 4 km/h and 5 km/h. What is the average speed along the whole journey?

**A**

$5{5/83}$ kmph.

**B**

$6{11/82}$ kmph.

**C**

$3{82/85}$ kmph.

**D**

$7{74/85}$ kmph.

**Soln.**

**Ans: a**

Let the edge of the triangle be L. Total distance travelled = 3L. Time taken = $L/7 + L/4 + L/5$. So overall average speed = ${3L}/{L/7 + L/4 + L/5}$ which simplifies to ${420/83}$, which is same as: $5{5/83}$ km/h.

### Question 2

A car is moving at a speed of 90 kmph. What is the speed in m/s?

### Question 3

An aircraft was on a 220 km journey. Its engine developed a snag so it had to slow down. It's average speed reduced by 2km/h, as a result of which it reached its destination late by 1 hour. What was the actual duration of the journey?

### Question 4

A car is moving at a speed of 35 meters per second. What is the speed in Km/h?

### Question 5

A school bus covers a certain distance in 3 hours at a speed of 42 km/h. At what speed should it travel to cover the same distance in 6 hours?

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This Blog Post/Article "Distance and Time Quiz Set 010" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

Updated on 2020-02-07. Published on: 2016-05-06