| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.82 |
| Score | 0% | 76% |
How many hours does it take a car to travel 240 miles at an average speed of 60 miles per hour?
| 6 hours | |
| 8 hours | |
| 3 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 = \( \frac{240mi}{60mph} \)
4 hours
Which of these numbers is a factor of 20?
| 10 | |
| 21 | |
| 22 | |
| 19 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 20 are 1, 2, 4, 5, 10, 20.
What is \( \frac{1}{8} \) x \( \frac{1}{9} \)?
| \(\frac{8}{15}\) | |
| \(\frac{1}{72}\) | |
| \(\frac{4}{21}\) | |
| \(\frac{4}{15}\) |
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{8} \) x \( \frac{1}{9} \) = \( \frac{1 x 1}{8 x 9} \) = \( \frac{1}{72} \) = \(\frac{1}{72}\)
What is the distance in miles of a trip that takes 1 hour at an average speed of 50 miles per hour?
| 50 miles | |
| 315 miles | |
| 600 miles | |
| 75 miles |
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 distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 50mph \times 1h \)
50 miles
Damon loaned Latoya $900 at an annual interest rate of 5%. If no payments are made, what is the total amount owed at the end of the first year?
| $981 | |
| $945 | |
| $954 | |
| $909 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $900
i = 0.05 x $900
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $900 + $45