A train travels 60km in M minutes. If it's average speed is 400km per hour find the value of M?
the value of M is 9 min.
D = RT
The distance D = 60 km
the rate R = 400km/hr
M = the time in mins.
Substitute the values into the D =RT equation and solve.
Change the Rate to 400 km/60 min
Multiply both sides by the inverse of the Rate