Question

Jack made a trip to his friends house and back. The trip there took two hours the trip back took three hours. What was Jax average speed on the trip there if he averaged 30 km an hour on the return trip? 

Answer 1

The return distance is 3x30 = 90 km.
Total distance = 180 km and total time = 5 hours.
Average speed= 180/5 = 36 km/hr