If a straight line with slope 3 intersec...

If a straight line with slope 3 intersects a straight line with slope 6 at the point `(30, 40)`. Then, the difference between the `y-`intercepts of the straight lines is
a)60 b)70 c)80 d)90

A

60

B

70

C

80

D

90

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The correct Answer is:

D

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