CA foundation economics marginal product and total product

Suppose the first four units of a variable input generate corresponding total output of 150,200,350,550. What will be the marginal product of third unit of input ?
A) 50
B) 100
C) 150
D) 200
The answer given in the paper is 200, but i think the answer is 150, please explain !!
Replies (4)
Quick Summary
This discussion delves into the calculation of marginal product for the third unit of input, given specific total output figures. The user questions the provided answer of 200, believing it should be 150, and seeks clarification on the marginal product formula and its application. The core of the debate revolves around correctly determining the increase in output attributable to the third unit of input.

For this, The marginal product formula

= increase  in output/ change in input= (y1-y0)/(x1-x0) here, no input is given to find out what the real answer is. 

Why do you need input to find out marginal product ?

Do you think there is logic here which I am unaware of? If you have the answer, please post it here. Txs

I think the answer is 150, leave it. let someone else answer it, I'm not satisfied with your answer, sorry !

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