Question

A car takes 50 minutes to reach a school. The odometer of the car shows that the car has
covered a distance of 10 km. What is the speed of the car?
​

Answer 1

Answer:

12 km/h

Step-by-step explanation:

Time taken

= 50 minutes

= 50/60 hours

= 5/6 hours

Distance travelled = 10 km

Speed

= Distance travelled / Time taken

= 10 / 5/6 km/h

= 10×6/5 km/h

= 60/5 km/h

= 12 km/h (Ans.)

Answer 2

The speed of the car to reach a school is 12 km/h.

Concept used:

First ,we have to convert time into hours by dividing it by 60.

Then find the speed of the car by using speed, distance and time formula.

Formula used:

S = $\frac{D}{T}$  

Speed = Distance travelled/ Time taken

Given:

Odometer shows that the car has covered a Distance to reach a school ,D = 10 km

Time taken to reach a school = 50 minutes

To find:

The speed of the car

Solution:

Step 1: Convert minutes into hours:

Time taken to reach a school , T = 50 minutes

T = 50 ÷ 60 hours

[1 hr = 60 min or 1 min = 1 ÷ 60 hr]

T = 5/6 hours

Step 2: Find the speed of the car:

Speed = Distance travelled ÷ Time taken

S = D ÷ T

S = 10 ÷ $\frac{5}{6}$  km/h

S = 10 × $\frac{6}{5}$   km/h

S = 2 × 6 km/h

S = 12 km/h

Speed of the car = 12 km/h

Hence the speed of the car is 12 km/h.

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