So first of all the question is asking you to convert feet to inches
I’m pretty sure it’s B because you can put in any number and it could still have a difference of 1
Total cars 12+54 = 66
Find percentage of minivans.
12/66 = 0.1818 or ~18%
~18% of 77
77* 0.1818 = 13.999 ~ 14 rounded