At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hours less t
At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hours less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for his 24-mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?
213 mph
113 mph
217 mph
223 mph
123 mph