There are two $5 bills and ten $10 bills in Neil's wallet and this can be determined by forming the linear equation in two variables.
Given :
Let the total number of $5 bills be 'a' and the total number of $10 bills be 'b'. Then the total number of bills will be:
--- (1)
It is given that Neil has 5 times as many $10 bills as $5 dollar bills, that is:
---- (2)
Now, substitute the value of 'b' in equation (1).
a + 5a = 12
6a = 12
a = 2
Now, put the value of 'a' in equation (2).
b = 10
There are two $5 bills and ten $10 bills in Neil's wallet.
For more information, refer to the link given below:
Is the answer to this question 1/3???