Iago is interested in money. he has a collection of bills in his pocket. he finds that he has two fewer $20 bills than he does $10 bills, three more $5 bills than $10 bills, and twice as many $1 bills as $10 bills. he has a total of $160. how many of each type of bill does iago have?

Let x be the number of $10 bills in Iago pocket.

1. If he has twice as many $1 bills as $10 bills, then he has (2x) $1 bills.

2. He has two fewer $20 bills than he does $10 bills, then he has (x-2) $20 bills.

3. He has three more $5 bills than $10 bills, then he has (x+3) $5 bills.

In total he has $160 that is x·10+2x·1+(x-2)·20+(x+3)·5.

Equate these two expressions and solve the equation:

Thus, he has

answer: i think it is (1,-2)