without stoppages , a train travels certain distance with an average speed of 200 km / h , and with stoppages , it covers the same distance with an average speed of 160 km / h . how many minutes per hour the train stops ?
"due to stoppages , it covers 40 km less . time taken to cover 40 km = 40 â  „ 200 h = 1 â  „ 5 h = 1 â  „ 5 ã — 60 min = 12 min answer e"
subtract(const_60, multiply(divide(160, 200), const_60))