If a train runs at 40 km/hr, it reaches its destination late by 11 minutes but if it runs at 50 km/hr, it is late by 5 min only. The correct time for the train to complete its journey is:

• ক 17 min
• খ 21 min
• গ 17 min
• ঘ 19 min ✅ সঠিক উত্তর