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In the diagram above, the marginal rate of substitution o...

In the diagram above, the marginal rate of substitution of X for Y, for a movement from S to T is

In the diagram above, the marginal rate of substitution of X for Y, for a movement from S to T is

A.

13.3

B.

1.5

C.

18.4

D.

5.1

Correct answer is D

To produce 18 units of Y, at point S, 3 units of X was produced at the same point S. A movement along the production chart from point S to T, the firm gave up 5 units of Y to produce 4 units of X. This means that the firm gave up 5 units of product Y to produce 1 additional unit of X.

The ratio of substitution is 5:1