# Math

posted by
**elangovalan**
.

The speed of a metro train is 54 km/hr excluding stoppage time and if including

stoppage the speed is 45 km/hr then for how many minutes does it stop per hour ?

posted by
**elangovalan**
.

The speed of a metro train is 54 km/hr excluding stoppage time and if including

stoppage the speed is 45 km/hr then for how many minutes does it stop per hour ?