Final answer:
To find the total value of Donald's bills, multiply the number of twenty-dollar bills by $20, multiply the number of ten-dollar bills by $10, and add the two values together.
Step-by-step explanation:
To find the total value of Donald's bills, we need to calculate the sum of the twenty-dollar bills and the ten-dollar bill. To calculate the value of the twenty-dollar bills, we multiply the number of bills (XX) by the value of each bill ($20). Similarly, we multiply the number of ten-dollar bills (1) by the value of each bill ($10). Finally, we add the two values together to find the total value of Donald's bills.
Total value of twenty-dollar bills = XX x $20 = $XX0
Total value of ten-dollar bill = 1 x $10 = $10
Total value of Donald's bills = Total value of twenty-dollar bills + Total value of ten-dollar bill = $XX0 + $10 = $XX0 + $10 = $XX0
Therefore, the value of Donald's bills is $XX0.