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Rate of Change, Marginal Cost & Revenue · Question 18 of 79

Question 18

EasyOriginal question

A firm's cost of making xx units is C(x)=500+20xC(x) = 500 + 20x rupees and its revenue is R(x)=45xR(x) = 45x rupees. What is its profit on 40 units?

Options for question 18

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. R(40)=1,800R(40) = 1{,}800 and C(40)=500+800=1,300C(40) = 500 + 800 = 1{,}300.

  2. Profit =1,800−1,300=500= 1{,}800 - 1{,}300 = 500 rupees.

Worth noting

₹1,000 leaves out the fixed cost of ₹500.

Concept
Profit from cost and revenue
Typical time
60 s
Your time
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The rule this testsCost, revenue and profit functions
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