From an island, it is possible to reach the mainland by either Ferry P or Ferry Q. Ferry P travels for 3 hours at 8 kilometers per hour, while Ferry Q takes a route that is three times longer. If Ferry P is slower than Ferry Q by 1 kilometer per hour, how many hours longer is the journey of Ferry Q compared with the journey of Ferry P?  Choose one:  A) 5  B) 7  C) 8  D) 10  E) 12
The distance traveled by Ferry P is 24 km.   Then the distance traveled by Ferry Q is 72 km. Ferry Q travels at a speed of 9 kph. The time of the journey for Ferry Q is  72/9= 
<gadget id="calculator"> 72/9</gadget>
<output>8</output>
8 hours, which is 5 hours more than Ferry P. The answer is 5.
<result>A</result>
From an island, it is possible to reach the mainland by either Ferry P or Ferry Q. Ferry P travels for 3 hours at 8 kilometers per hour, while Ferry Q takes a route that is three times longer. If Ferry P is slower than Ferry Q by 1 kilometer per hour, how many hours longer is the journey of Ferry Q compared with the journey of Ferry P?