A car, running at 45 km/hr, takes 6 hours to cover a journey. At what speed must it travel in order to complete the journey in 5 hours?

Asked by Topperlearning User | 19th Sep, 2016, 02:27: PM

Expert Answer:

Speed space of space the space car space equals space 45 space km divided by hr
Time space equals space 6 space hr
Distance space equals space Speed space cross times Time space equals 45 cross times 6 space equals 270 space km

Now comma space time space equals space 5 space hrs
distance space equals space 270 space km
therefore New space speed space equals space distance over time equals 270 over 5 km divided by hr equals 54 space km divided by hr

Answered by  | 19th Sep, 2016, 04:27: PM