CAT Quant Practice Problems

Question: David manufactures and sells a single product at a fixed price in a niche market. The selling price of each unit is Rs. 30. On the other hand, the cost, in rupees, of producing ‘x’ units is 240 + bx + cx2, where ‘b’ and ‘c’ are some constants. Mr. David noticed that doubling the daily production from 20 to 40 units increases the daily production cost by \(66\frac{2}{3}\% \) . However, an increase in daily production from 40 to 60 units results in an increase of only 50% in the daily production cost. Assume that demand is unlimited and that Mr. David can sell as much as he can produce. His objective is to maximize the profit.

How many units should Mr. David produce daily?

130
100
70
150
Cannot be determined
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CAT Quant Practice Problems
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