Two boats started to move towards each other from two docks, located 30 miles apart. One boat moved at a speed of 2.5 miles per hour, the other moved twice as fast. How soon will the boats meet?
Time taken for the boats to meet will be given by: time=(distance)/(speed) relative speed=(speed of boat A+speed of boat B) speed of boat A=2.5 mph speed of boat B=2(2.5)=5 mph thus relative speed=(5+2.5)=7.5 mph distance=30 miles thus time=30/7.5=4 hours thus the earliest they can meet is 4 hours
