Question

Carrington used 3/4 of the 1/2 of an hour allotted for an exam to do the first 3 problems. How much time does he have left for the remaining part of the exam?

Answer 1

Answer: $\dfrac{1}{8}~\textup{hour}$ left for the remaining part of the exam.

Step-by-step explanation:  Given that Carrington used $\dfrac{3}{4}$ of the $\dfrac{1}{2}$ of an hour allotted for an exam to do the first 3 problems.

We are to calculate the time that he has left for the remaining part of the exam.

We have

Total time used i the first three problems is given by

$\dfrac{3}{4}\times \dfrac{1}{2}=\dfrac{3}{8}~\textup{hour}.$

Therefore, the time left to complete the remaining part of the exam will be

$T_r=\dfrac{1}{2}-\dfrac{3}{8}=\dfrac{4-3}{8}=\dfrac{1}{8}~\textup{hour}.$

Thus, $\dfrac{1}{8}~\textup{hour}$ left for the remaining part of the exam.

Answer 2

Answer:

22 minutes 30 seconds

Step-by-step explanation:to get the answer first we get 3/4 of 30 minutes which is 1/2 an hour and then you get ur answer