Jin buys 4 balls of yarn for a total of $23.78 she pays with two $20 Bill's. What is her change?
1 answer:
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Answer:
We have been given the equation:
And x=10
Substitute the given x in the given equation we get:
On simplification we get:
Required solution is: x= 10 and y=-20
The solution to the system of equation is those points that satisfy the given system of equations.