Answer:
4 * $20 , 10* $10 and 1 * $5 bills.
Step-by-step explanation:
Let x = 20, y = 10 and z = 5 be the number of dollar bills.
x + y + z = 15 Also
20x + 10y + 5z = 185 Multiply the first equation by 5:
5x + 5y + 5z = 75 Subtract:
15x + 5y = 110 Divide through by 5:
3x + y = 22 There has to be an odd number of $5 bills.
Trial and error:
Let x = 4 then y = 10 then z = 1:
Substitute these into the second equation:
20(4) + 10(10) + 5 = 80 + 100 + 5 = 185.
So the answer is 4 $20 , 10 $10 and 1 $5 bills.
