Stephan owns a landscaping company. Today, he is mowing three lawns: one is 1/4 of an acre, one is 1/2 of an acre, and one is 1 1/3 acres. How many acres of lawn is Stephan going to mow today? Simplify your answer and write it as a mixed fraction if necessary.

You have $600,000 saved for retirement. your account earns 5.5% interest. how much, to the nearest dollar, will you be able to pull out each month, if you want to be able to take withdrawals for 20 years?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?

Two years ago a man was six times as old as his daughter. in 18 years he will be twice as old as his daughter. determine their present ages.