41-19 is 22 so he has 22 nickels. The amount of dimes is put in there to distract you. Just ignore those! :)
(9 × 10) + (20x + 21) = 571
90 + 20x + 21 = 571
111 + 20x = 571
- 111
20x = 460
÷ 20
x = 23
I hope this helps!
To convert a percentage to decimal form, you need to divide the number in the percent by 100. In reality, that just looks like moving the decimal point to the left two places.
83% / 100 = 0.83
83% in decimal form is 0.83.
Hope that helped! =)
We have the following:
To calculate the total money, you have to add the amounts that Paula won, as follows

Which means that in total they are $ 14.95