The cost to rent a small bus for a trip is x dollars, which is to be shared equally among the people taking the trip. If 10 people take the trip rather than 18, how many more dollars, in terms of x, will it cost per person?	Choose the correct choice from the following
A) x/6  B) x/16  C) x/40  D) 3x/40  E) 3x/80
Choose x as a multiple of 16, I chose 64:   So for 10 people, that's 6.4 each and for 18 people it's 4 USD each... Pick one of the options that gives you 6.4 - 4 = 2.4... The answer is x/16.
<result>B</result>
The cost to rent a small bus for a trip is x dollars, which is to be shared equally among the people taking the trip. If 10 people take the trip rather than 18, how many more dollars, in terms of x, will it cost per person?