Question

A car moves with a speed of 40 km/h for 15 minutes and then 10 min with a speed of 60 km/h. Find the distance covered by car.

Answer 1

Answer :-

20.2km

Explanation :-

Given :

Car moves with a speed of 40km/hr for 15min and then 60km/hr for next 10min.

Convert 15 minutes and 10minutes into hours

= 15/60hr

= 0.25hr

= 10/60hr

= 0.17hr

To Find :

Distance covered by the car = ?

Solution :

We know,

$\boxed{\sf{}Speed =\dfrac{Distance}{Time}}$

So,

$\boxed{\sf{}Distance =Speed\times Time}$

Distance travalled in first 0.25hr

$\sf{}\implies d_1 =40km/hr \times 0.25hr$

$\sf{}\therefore d_1 =10km$

Distance travalled in first 0.17hr

$\sf{}\implies d_2 =60km/hr \times 0.17hr$

$\sf{}\therefore d_2 =10.2km$

Total distance travelled by the car,

$\sf{}\implies d_1+d_2}$

$\sf{}\implies (10+10.2)km$

$\sf{}\therefore 20.2km$

Therefore,distance covered by the car is 20.2 km (approx)