From an island, it is possible to reach the mainland by either…

From an island, it is possible to reach the mainland by either Ferry P or Ferry Q. Ferry P travels for 2 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 4 kilometers per hour, how many hours longer is the journey of Ferry Q compared with the journey of Ferry P?

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #17686