| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.22 |
| Score | 0% | 64% |
How many hours does it take a car to travel 200 miles at an average speed of 50 miles per hour?
| 6 hours | |
| 4 hours | |
| 3 hours | |
| 5 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 = \( \frac{200mi}{50mph} \)
4 hours
Which of the following is not a prime number?
2 |
|
5 |
|
9 |
|
7 |
A prime number is an integer greater than 1 that has no factors other than 1 and itself. Examples of prime numbers include 2, 3, 5, 7, and 11.
What is \( \frac{1}{8} \) ÷ \( \frac{3}{8} \)?
| \(\frac{1}{3}\) | |
| \(\frac{1}{18}\) | |
| \(\frac{3}{20}\) | |
| \(\frac{1}{9}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{1}{8} \) ÷ \( \frac{3}{8} \) = \( \frac{1}{8} \) x \( \frac{8}{3} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{1}{8} \) x \( \frac{8}{3} \) = \( \frac{1 x 8}{8 x 3} \) = \( \frac{8}{24} \) = \(\frac{1}{3}\)
If the ratio of home fans to visiting fans in a crowd is 3:1 and all 37,000 seats in a stadium are filled, how many home fans are in attendance?
| 26,400 | |
| 27,750 | |
| 32,667 | |
| 37,500 |
A ratio of 3:1 means that there are 3 home fans for every one visiting fan. So, of every 4 fans, 3 are home fans and \( \frac{3}{4} \) of every fan in the stadium is a home fan:
37,000 fans x \( \frac{3}{4} \) = \( \frac{111000}{4} \) = 27,750 fans.
| 1 | |
| 0.7 | |
| 3.2 | |
| 5.0 |
1