A car travelling at a speed of 72km/h takes 15/2hours to complete a journey. if the car can travel at 90km/h, how long would it take to complete the same journey?
Answers
Answer:
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Given,
A car traveling at a speed of 72 Km/h takes 15/2 hours to complete a journey.
To find,
Time taken by the car to complete the same journey if it can travel at 90 Km/h.
Solution,
We can simply solve this numerical problem by using the following process:
Mathematically,
Speed (s) = distance traveled (d)/time of journey(t)
=> Distance traveled (d) = speed (s) x time of journey(t)
{Statement-1}
Now, according to the question;
When the car travels at a speed of 72 Km/h, it takes 15/2 hours to complete a journey.
=> total distance covered in the journey
= speed (s) x time of journey(t)
{according to statement-1}
= 72 Km/hr × 15/2 hr
= 540 Km
Now, according to the question;
When the car completes the same journey at 90km/h, the time taken
= distance covered/speed
{according to statement-1}
= (total distance covered in the journey)/(speed of the car)
= (540 Km)/(90 Km/hr)
= 6 hours
Hence, the car takes 6 hours to complete the same journey if it can travel at 90 Km/h.