Question

A car covers the first 30 km of its journey in 45 minutes and the remaining 25 km in 30 minutes. what is the average speed of the car? 60

Answer 1

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Answer 2

Answer:

The average speed of the car is 44 km/hr.

Step-by-step explanation:

Given : A car covers the first 30 km of its journey in 45 minutes and the remaining 25 km in 30 minutes.

To find : What is the average speed of the car?

Solution :

A car cover first distance is 30 km.

The remaining distance is 25 km.

Total distance cover = 30+25=55 km.

A journey first take 45 minutes.

The remaining time is 30 minutes.

Total time taken =45+30=75 minutes

Convert into hours.

1 hr=60 min

$1 m=\frac{1}{60} h$

$75 m=\frac{75}{60} h$

So, Time is $T=\frac{75}{60} h$

We know, $\text{Speed}=\frac{\text{Distance}}{\text{Time}}$

$\text{Speed}=\frac{55}{\frac{75}{60}}$

$\text{Speed}=\frac{55\times60}{75}$

$\text{Speed}=44$

Therefore, The average speed of the car is 44 km/hr.