1)72km=distance, 1hour 20 mins= time so what is the speed?
2) 248 km/h= speed, 1 hour 15 mins= time so what is the distance?
1) Distance / Time = Rate (Speed)
172 km / 1 hr 20 min =
172 km / 1+1/3 hr =
172 km / 4/3 hr =
172 km x (3/4) / hr = 129 km / hr
2) Rate x Time = Distance
248 km/hr x 1hr 15 min =
248 km/ hr x 1.25 hr = 310 km
