Question

10% of x + 20% of y =24; 3x - y=20 solve, using the method of subreaction

Answer 1

10%of x+20%of y=24

x/10 +y/5=24

x+2y/10=24

x+2y=240

x=240-2y

now

3x-y=20

putting x in this equation

we get

3(240-2y)-y=20

720-6y-y=20

700=7y

y=100

then x=240-200=40

Answer 2

Answer:

Step-by-step explanation:

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