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Production Function: TP, MP and AP · Question 13 of 62

What is the marginal product of the 9th unit of labour?

Question 13

MediumOriginal question

Capital is fixed and labour is varied. The table shows total product.

Labour (units)123456789
Total product102439526066707063

What is the marginal product of the 9th unit of labour?

Options for question 13

Show the answer and explanation
CorrectNot quiteAnswer A

Correct answer: A

Explanation

  1. MP₉ = TP₉ − TP₈ = 63 − 70 = −7.

  2. Too many workers on the fixed capital get in each other's way, so output falls.

Worth noting

7 is the average product at 9 units (63 ÷ 9), with no minus sign.

Concept
Negative marginal product
Typical time
70 s
Your time
—
The rule this testsTotal, marginal and average product
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