I need help with this

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

This question awards 100 ! i really don’t want to fail i will also mark you !

If 25% of y is 30, what is 60% of y?