# Finding Interest Lesson

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• Today's Lesson: Finding Interest
• Hey guys! Today we will be learning about finding interest. Let's get right into the lesson.
• I = p . r . t
• Interest
• Principal
• Rate ( %)
• Time
• So today class we will be learning about Finding interest!
• Now the whole journey is for to find the Interest which is the main part of this whole journey.
• He keeps kicking me stop!
• No you stop trying to hit me!
• The first part of finding interest is the Principal. For example I'll tell you a problem.
• So what you have to do is multiply the principal and the rate which is the percent and multiply and what you should get is \$310.00 which is the commission.
• Billy also gets a salary of \$200.00 a week. How much does she make for the week? Basically you add the money he gets paid at the time so it would be \$200 + \$310 = \$510.00.
• Billy sold a car for \$15,500 and received 2% commission on that sale. What does he earn in commission?