A child's train ticket costs $7. That is 1/4 as much as an adult's ticket. How much does an adult's train ticket cost?

3 answers

(1/4)x = 7
x = 7/(1/4)
x = 7 * (4/1)
x = 28
Mona and her son must take the train. They are told that a chil's ticket xosts in only 2/3 of an adult's ticket. Knowing that an adult's tocket costs $8.50 more than a childs ticket, find the price of each person's ticket.
28