Question

In the given figure ABCD is a parallegram find x AB=3x+5 CD =5x-1
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Answer 1

in a parallelogram opposite sides are equal in length

so, AB=CD and BC=AD

i.e. 2x+5=y+1 and 3x-4=y+5

2x-y+4=0 and

3x-y-9=0

solve the equations by eliminating y and you will get x=13

Now we have to find AB/BC

i.e. (2x+5)/(3x-4)

put x=13

the Ans is 31/35