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.

answer by yourhope:

hi! : )

a farmer that lived in ancient egypt would most likely be barried in the sand, in the desert!

: )

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.