Question

Geometry math question

Answer 1

we are given that

ABCD is a parallelogram

so,

AB=CD

AD=BC

Calculation of x:

AB=CD

$x+30=2x-10$

now, we can solve for x

$x=40$

Calculation of y:

AD=BC

$2y-10=y+10$

now, we can solve for y

$y=20$

calculation of z:

$z=x-y$

we got

$x=40$

$y=20$

we can plug it

$z=40-20$

$z=20$

option-B..............Answer