Calculation about simple loans: 1)If the amount payable in two years is $2420 for a simple loan at 10 percent interest, the loan amount is 2) For a 3-year simple loan of $10,000 at 10 percent, the amount to be repaid is? 3) If $22,050 is the amount payable in two years for a $20,000 simple loan made today, the interest rate is