Melissa plays the piano .her goal is to practice 240 minutes each week. this week she practiced 60 minutes on monday, 45 minutes on tuesday , and 50 minutes on wednesday . how many minutes does she have to practice the rest of the week in order to reach her goal.

How do you find principle and simple interest

The number if marbles of different colors stored in a hat is listed below: 4 red marbles 10 green marbles 7 blue marbles. without looking in the hat, dan takes out a marble at random. he replaces the marble and then takes out another marble from the hat. what is the probability that dan takes out a blue marble in both draws?

If the simple annual interest rate on a loan is 6, what is the interest rate in percentage per month?