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Rate of Change, Marginal Cost & Revenue · Question 61 of 79

What is the firm's greatest weekly revenue?

Question 61

MediumOriginal question

A firm finds that to sell xx units a week it must set the price at p=120−2xp = 120 - 2x rupees a unit.

What is the firm's greatest weekly revenue?

Options for question 61

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. At x=30x = 30: R=120(30)−2(900)R = 120(30) - 2(900).

  2. 3,600−1,800=1,8003{,}600 - 1{,}800 = 1{,}800 rupees.

Worth noting

₹3,600 drops the price cut, charging ₹120 on every unit.

Concept
The maximum revenue
Typical time
120 s
Your time
—
The rule this testsMarginal revenue
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