A car takes 10 hours to cover a distance of 300 km .Calculate its speed
Answers
Explanation:
1
If a car takes 6 hours to cover a distance of 300 km, how much time does it take to cover 250 km?
Eduardo Dequilla
Answered May 11, 2018
There are two ways to solve this problem on distance, speed and time.
First, you can use the formula time = distance / speed and speed can be solved by dividing 300 km by 6 h. You will get the value of time to be 5 hours after dividing 250 km by 50 km/h.
Second, you can use ratio and proportion. Using symbols d1 / t1 = d2 / t2
t2 = (d2 * t1) / d1
t2 = (250 km * 6 h) / 300 km and cancellation results to
t2 = 5/6 * 6
t2 = 5 hours is the time for the car to travel 250 km.
Explanation:
A car covers 300 km at a constant speed. If its speed was 10 kmph more, it would have taken one hour less to travel the same distance. What is the speed of the car?
Let's start by writing the words in the form of mathematical equations,
v = s/t
v+10 = s/(t-1)
from the above two equations, we can calculate v by substituting the S to be 300km, Taking time in hours
we can re-write the equation 2 with the help of equation 1 as,