The slope of the line is -(1/2)
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Increases by +2
Its arithmetic
Sixth number would be 17+2=19
Seventh is 19+2=21
Eighth is 21+2=23
1/5 are dogs.
1/5 x 2700 = 540
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Answer: There are 540 dogs.
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X + y = 20---- 1
x - y = 8----- 2
From 1+2
2x = 28
x = 14
Substitute x in eq.2
14 -y = 8
y = 6
Ans : x= 14 , y= 6
