Kirk is taking an exam and has 1

Question

1
2
hours to complete the test. He has used
1
3
of his time already.

How much time has Kirk used already on the test?
mc001-1.jpg an hour
mc001-2.jpg an hour
mc001-3.jpg an hour
mc001-4.jpg an hour

Answer 1

Kirk has 1.5 hours (or 1 hour and 30 minutes) to complete the test. If he has used $\frac{1}{3}$ of his time already, we can calculate how much time he has used.

First, we find $\frac{1}{3}$ of 1.5 hours:

$$\text{Time used}=\frac{1}{3}\times 1.5\text{ hours}$$

To make the calculation easier, we can convert 1.5 hours to a fraction:

$$1.5\text{ hours}=\frac{3}{2}\text{ hours}$$

Now, calculate $\frac{1}{3}\times \frac{3}{2}$:

$$\frac{1}{3}\times \frac{3}{2}=\frac{1\times 3}{3\times 2}=\frac{3}{6}=\frac{1}{2}\text{ hours}$$

Thus, Kirk has used $\frac{1}{2}$ hour, which is equivalent to 30 minutes.

Therefore, the answer is:

$\frac{1}{2}$ hour