Abag contains only 50 cent coins and $1 bills. the total amount of money in the bag is $36. if there are twice as many 50 cents coins as $1 bills, how many 50 cents coins are in the bag?

The total number of 50 cent coins in the bag = 36.

Step-by-step explanation:

Let x be the number of 50 cents coins and y be the number of $1 bills.

We have been given that the total amount of money in the bag is $36. We can represent this information as:

We are also told that there are twice as many 50 cents coins as $1 bills. We can represent this information as:

Now we will use substitution method to solve our given system of equations. Upon substituting equation (2) in equation (1) we will get,

Now let us substitute y=18 in equation (2) to find our x.

Therefore, there are 36 fifty cent coins in the bag.

the answer is (-4,-4)

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