A group of nine people, some adults and some children, went to the movie theater. Adult admission was $8 and child admission was $5. The amount charge was $55. Could this amount be correct?

Answer 1

a + c = 9

8 a + 5 c = 55

solve the system of equations for (a) and (c)

if the solutions are not integer values (whole numbers)
... then something is amiss with the $55 charge