Question

 If 0.2x+0.3y=1.3 and y=3 then 

a) x=-2

b) x=2

c) x=3

d) x=-3

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Answer 1

if y=3

0.2x+0.3(3)=1.3

0.2x=1.3-0.9

0.2x=0.4

x=2

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Answer 2

Step-by-step explanation:

0.2X+0.3x3=1.3

0.2X+0.9=1.3

=0.2X=1.3-0.9

=0.4

so X=0.4/0.2

=2

so ans is option b. x=2