Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Solve the problem. Dan's long-distance phone carrier charges him $7.95 a month for service. In addition, Dan is charged 10 cents a minute for the calls he makes. If his monthly bill is $30.05, how many minutes of calls did he make?: 222 minutes; 221 minutes; 232 minutes; 211 minutes
Right answer summary: 221 minutes
Question state: todo