A phone service provider charges $3.50 for the first hour and $1.75 for each additional hour. How much would it cost to use the service for 1 and a half hours?

Answer 1

For this problem, it would be helpful to know if any portion of an hour beyond the first hour is still charged $1.75. Assuming this is the case, the total for 1 1/2 hours would be the same as for 2 hours of use. So the first hour would cost $3.50, the next half hour would be another $1.75, so the total would be $3.50 + $1.75 or $5.25.