Exercise 12 (B) Question 8 - Selina Mathematic Class 6 – Idea of Speed, Distance & Time.

 Exercise 12 (B) Question 8 - Selina Mathematic Class 6 – Idea of Speed, Distance & Time.

Mohit covers a certain distance in 6 hours by his scooter at a speed of 40kmh−1. Find the time taken by Manjoor to cover the same distance by his car at the speed of 60kmh −1

Given

Mohit covers a distance at a speed of 40 km/h in 6 hours by his scooter

So,

Speed of scooter =40km/h

Time is taken by scooter =6 hours

Hence,

Distance =40×6

We get,

=240km

Now, the time is taken by Manjoor to cover 240km by his car at the speed of 60km/h is calculated as below

Time =240/60

We get,

=4 hours

Hence, the time taken by Manjoor to cover 240 km by his car at the speed of 60 km/h is 4 hours

Mohit covers a certain distance in 6 hours by his scooter at a speed of 40kmh −1. Find the speed of Joseph, if he takes 8 hrs to complete the same distance

Given

Mohit covers a distance at a speed of 40 km/h in 6 hours by his scooter

So,

Speed of scooter =40km/h

Time is taken by scooter =6 hours

Hence,

Distance =40×6

We get,

=240km

Now, the speed of Joseph to cover 240 km in 8 hours can be calculated as below

Speed =240/8

=30km/h

Hence, the speed of Joseph to cover 240 km in 8 hours is 30 km/h

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