A local carnival costs $5 to enter and 50₵ per ride. What is the marginal cost of the 5th ride?

Question

anonymous · Answer

I thought the MC would be .50? Was I wrong?

anonymous · Answer

this question is quiet tricky.

the asked question is how much is the 5th ride?
my answer:
given; 5=entry
        50=ride
there are two answers. (1) if he/she didn't get out and continue riding until the fifth ride
                                   (2) if he/she got one ride every entry.

solution for (1)
  1 entry= 5
             +.50(5) ; since 5 ride

             = 5+.5(5)=5+2.5=7.5; total payment

solution for (2)
  entry = 5(5) = 25; since 5 entry
  ride =  .5(5)= 2.5; since 5 ride
       
            =27.5;total payment