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Systems of equations word problems (with zero and infinite solutions)

CCSS.Math: HSA.CED.A.2, HSA.CED.A.3, HSA.REI.C.6

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Liam's bookstore sold 40 notebooks and 20 newspapers for a total of dollar sign, 130.

A day later, the bookstore sold 8 notebooks and 4 newspapers at the same prices, for a total of dollar sign, 28.

How much does a notebook and a newspaper cost at Liam's bookstore?

(Choice A)
There is not enough information to determine the exact cost of a notebook and a newspaper.
(Choice B)
The given information describes an impossible situation.
(Choice C)
A notebook costs dollar sign, 2, point, 50 and a newspaper costs dollar sign, 1, point, 50.
(Choice D)
A notebook costs dollar sign, 1, point, 50 and a newspaper costs dollar sign, 2, point, 50.

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