Frank borrows $20,000 to get his Master's degree. He will pay 5.5% simple interest over 5 years. How much interest will he have to pay on his loan? ​

Naomi’s parents want to have 50,000, saved for her college education, if they invest 20000 today and earn 7% interest compound annually, about how long will it take them to save 50 thousand

Can someone me with this problem . show your work .

Olga used 100 ounces of flour to make 225 muffins. how many ounces of flour will be used to make 300 muffins?