<human>:  Jenna's doctor tells her that she should tan no more than 200 minutes a month. If she tans 30 minutes a day, two days a week for the first two weeks of the month, how many minutes can she tan in the last two weeks of the month?
<bot>: How many minutes does Jenna tan in the first two weeks? ** First find how many minutes Jenna tans each of the first two weeks: 30 minutes/day * 2 days/week = <<30*2=60>>60 minutes/week
How many minutes does Jenna tan in the first half of the month? ** Then multiply that number by the number of weeks to find how many minutes Jenna tans in the first half of the month: 60 minutes/week * 2 weeks = <<60*2=120>>120 minutes
How many minutes can Jenna tan in the last two weeks? ** Then subtract that time from the total time Jenna can spend tanning to find how many more minutes she can tan: 200 minutes - 120 minutes = <<200-120=80>>80 minutes
#### 80