Question

Peter has 4 more $50 bills than $10 bills in his wallet. If the total amount of money in his wallet is $380, how many $10 bills does Peter have?

I know the answer but I don't know how to set up the equation.

Answer 1

Let x = # of $50 bills

Let y = # of $10 bills

x = 4+y

50x + 10y = 380

substitute 4 + y for x

50(4+y) + 10y = 380
200 + 50y + 10y = 380
Solve for y to find # of 10 dollar bills.

Answer 2

30

Answer 3

Let the number of $10 bills be x.
Let the number of $50 bills be x+4.

Now, lets form a equation.

10x+50(x+4)= 380 (Equation)

-> 10x is the number of $10 bills we will get.
-> 50(x+4) is how many $50 which will be helpful for finding the $10.
-> $380 is the total of 10x and 50(x+4)

Lets go back to the formed equation.
10x+50(x+4)= 380
10x+50x+200=380
60x+200=380
60x=380-200
60x=180
x=180/60 (Cut the zeros)
x=18/6
x=3

Ans) Peter has 3 $10 bills.

Answer 4

how does it become 60x

Answer 5

how does it become 60x and 200

Answer 6

for those who are asking, 50(4+x) makes 60x+200 because 50(4+x) means (50×4)+(50×x)

Answer 7

I’m still so confused