I don't understand this at all, Please help, I will fan & medal.

The time, t, in hours, it takes for a bicyclist to complete a certain course varies as the bicyclist's speed, s, varies. If it takes 4 hours for the bicyclist to complete the course at a speed of 14 mph, approximately how many hours would it take the bicyclist to the complete the course at a speed of 18 mph?
A. 3.11 hours
B. 2 hours
C. 5.14 hours
D. 0.22 hours

Question

I don't understand this at all,  Please help, I will fan & medal.

 	

The time, t, in hours, it takes for a bicyclist to complete a certain course varies as the bicyclist's speed, s, varies. If it takes 4 hours for the bicyclist to complete the course at a speed of 14 mph, approximately how many hours would it take the bicyclist to the complete the course at a speed of 18 mph?
	A.  	3.11 hours
	B.  	2 hours
	C.  	5.14 hours
	D.  	0.22 hours

anonymous · Answer

umm not really... I have a guess it's B

anonymous · Answer

no its actually c, you multiply 18 by 4 which would give you 72.. then divide 72 by 14 which gives you an answer of 5.14

anonymous · Answer

Oh Okay. Now it makes sense.  :) Thank u