Question

The cost for a movie ticket is 7$. The cost is reduced to 5$ for groups of 10 or more. How many people must be in a group for them to save a total if 30$

Answer 1

15 people

Explanation:

Each person in the "large enough" group saves $2, so for a total savings of $30, there must be 30/2 = 15 people in the group.