Which of the triangles are right triangles?

Beth took out a $20,000 loan for college she is borrowing money from two banks. bank a charges an interest rate of 8.5% bank b charges and interest rate of 10.5% after one year alice owes $1860 in interest how much money did she borrow from bank a

27 is what percent of 108? 27 is % of 108

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.