| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.68 |
| Score | 0% | 74% |
How many hours does it take a car to travel 75 miles at an average speed of 25 miles per hour?
| 1 hour | |
| 3 hours | |
| 8 hours | |
| 4 hours |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{75mi}{25mph} \)
3 hours
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 25% off." If Frank buys two shirts, each with a regular price of $13, how much money will he save?
| $3.25 | |
| $0.65 | |
| $2.60 | |
| $1.30 |
By buying two shirts, Frank will save $13 x \( \frac{25}{100} \) = \( \frac{$13 x 25}{100} \) = \( \frac{$325}{100} \) = $3.25 on the second shirt.
If a car travels 440 miles in 8 hours, what is the average speed?
| 55 mph | |
| 20 mph | |
| 35 mph | |
| 70 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Diane scored 74% on her final exam. If each question was worth 3 points and there were 150 possible points on the exam, how many questions did Diane answer correctly?
| 25 | |
| 50 | |
| 37 | |
| 23 |
Diane scored 74% on the test meaning she earned 74% of the possible points on the test. There were 150 possible points on the test so she earned 150 x 0.74 = 111 points. Each question is worth 3 points so she got \( \frac{111}{3} \) = 37 questions right.
What is \( \sqrt{\frac{4}{64}} \)?
| 1\(\frac{1}{8}\) | |
| 2 | |
| 1\(\frac{3}{5}\) | |
| \(\frac{1}{4}\) |
To take the square root of a fraction, break the fraction into two separate roots then calculate the square root of the numerator and denominator separately:
\( \sqrt{\frac{4}{64}} \)
\( \frac{\sqrt{4}}{\sqrt{64}} \)
\( \frac{\sqrt{2^2}}{\sqrt{8^2}} \)
\(\frac{1}{4}\)