Assertion (A): Total utility rises as long as marginal utility is positive.
Reason (R): Total utility is the sum of the marginal utilities.

Both A and R are true, and R is the correct explanation of A.Correct answerYour answerBoth A and R are true, but R is not the correct explanation of A.Correct answerYour answerA is true, but R is false.Correct answerYour answerA is false, but R is true.Correct answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Adding a positive number to a sum raises it, so A is true.
R is the reason: TU is built by adding each MU, so a positive MU raises it.

Concept: Why positive MU raises TU
Typical timeTypical: 70 s
Your timeYours: —

The rule this testsTotal and marginal utility

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Assertion (A): Total utility rises as long as marginal utility is positive.Reason (R): Total utility is the sum of the marginal utilities.

Explanation

Assertion (A): Total utility rises as long as marginal utility is positive.
Reason (R): Total utility is the sum of the marginal utilities.