SOLUTION: Please help me to solve and understand these two questions:
1. x=0.6(300+y)
y=0.2(300+x)
Solve to 2 decimal places.
2. x=0.9(1000-y)
y=0.7(1000-x)
Also need to solv
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Expressions-with-variables
-> SOLUTION: Please help me to solve and understand these two questions:
1. x=0.6(300+y)
y=0.2(300+x)
Solve to 2 decimal places.
2. x=0.9(1000-y)
y=0.7(1000-x)
Also need to solv
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Question 404449: Please help me to solve and understand these two questions:
1. x=0.6(300+y)
y=0.2(300+x)
Solve to 2 decimal places.
2. x=0.9(1000-y)
y=0.7(1000-x)
Also need to solve to 2 decimal places.
Thank you for your help = )
Brenda Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 1.
x=0.6(300+y)
y=0.2(300+x)
Solve to 2 decimal places.
10x = 6*300 + 6y
10y = 2*300 + 2x
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Rearrange:
10x - 6y = 1800
2x - 10y = -600
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Modify:
10x - 6y = 1800
10x - 50y = -3000
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Subtract and solve for "y":
44y = 4800
y = 109.09
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Solve for "x":
2x - 10y = -600
2x - 10*109.09 = -600
2x = -600+ 1090
2x = 490
x = 245
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