A raft was sent away from point A downstream. A patrol-boat left A 5 hour and 20 min later and caught up with the raft 20 km away from point A. What was the speed of the raft if the speed of the patrol-boat was 12 km/hour?
Please help me!!!
A raft was sent away from point A downstream. A patrol-boat left A 5 hour and 20 min later and caught up with the raft 20 km away from point A. What was the speed of the raft if the speed of the patrol-boat was 12 km/hour?
Speed=Distance travelled/Time
12=20/Time
Time=20/12=1 2/3 hours that tool patrol boat to travel 20 Km.
1 2/3 + 5 1/3=7 hours since the raft left point A
Speed=20/7 =2 6/7 Km/hour- the speed of the raft.
