Question

ticket for an adult visiting an exhibition cost x cents. a ticket for a child costs 30 cents less than an adult's , the cost of a childs ticket

Answer 1

We have to calculate the cost of a child's ticket.

A ticket for an adult cost x cents.

A ticket for a child cost 30 cents less than an adult's, so it can be expressed as x - 30.

Answer: A ticket for a child costs (x - 30) cents.