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2016-03-12T13:04:03+05:30

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The linear equation here is not x+y=450 but it is x +2x = 450 as the french fries have double the calories. solution:

x+2x=450
x+2x=3x=450
x(samosa)=450/3=150
2x(french fries)=150*2=300
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but it is supposed to contain x and y as I am supposed to draw a graph
2016-03-12T13:34:08+05:30

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X+1\2x=450
so 3x/2=450
so 450x2=3x
so 900=3x
so x=30
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but it is supposed to contain x AND y for drawing the graph