Answer: $18.38
Explanation:
Mark has two $20 bills.
Add 20 and 20, or multiply 20 by 2.
20+20=40, or 20•2=40.
This means that he started with $40 dollars in total.
Then, Mark spent $21.62 out of the $40 that he had.
Now all we have to do is subtract $40.00 and $21.62.
40.00 - 21.62 = 18.38.
Another way to get your answer is to take $21.62 and cancel out the first $20 bill out of that so you're left with $1.62.
Then you can subtract the second $20.00 that Mark had by $1.62.
20.00 - 1.62 = 18.38.
In conclusion, Mark is left with $18.38.
