ABC Publishing sells an economics textbook and a matching study guide, both with zero marginal cost. Raheel would pay Rs75 for the text and Rs15 for the guide; Mariam would pay Rs60 for the text and Rs25 for the guide. If ABC prices the two products separately, what is the combined total of its best prices?
Correct answer D. Rs 75
Explanation
Charging Rs60 for the text sells to both (Rs120 beats Rs75) and Rs15 for the guide sells to both (Rs30 beats Rs25), so the separate prices add up to Rs75.
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