| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.55 |
| Score | 0% | 71% |
What is the distance in miles of a trip that takes 4 hours at an average speed of 25 miles per hour?
| 20 miles | |
| 45 miles | |
| 100 miles | |
| 315 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 = \( 25mph \times 4h \)
100 miles
Which of these numbers is a factor of 16?
| 11 | |
| 6 | |
| 12 | |
| 8 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 16 are 1, 2, 4, 8, 16.
Find the average of the following numbers: 14, 8, 12, 10.
| 7 | |
| 9 | |
| 11 | |
| 8 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{14 + 8 + 12 + 10}{4} \) = \( \frac{44}{4} \) = 11
If a mayor is elected with 72% of the votes cast and 45% of a town's 48,000 voters cast a vote, how many votes did the mayor receive?
| 14,472 | |
| 18,360 | |
| 14,256 | |
| 15,552 |
If 45% of the town's 48,000 voters cast ballots the number of votes cast is:
(\( \frac{45}{100} \)) x 48,000 = \( \frac{2,160,000}{100} \) = 21,600
The mayor got 72% of the votes cast which is:
(\( \frac{72}{100} \)) x 21,600 = \( \frac{1,555,200}{100} \) = 15,552 votes.
What is the greatest common factor of 56 and 28?
| 28 | |
| 12 | |
| 10 | |
| 7 |
The factors of 56 are [1, 2, 4, 7, 8, 14, 28, 56] and the factors of 28 are [1, 2, 4, 7, 14, 28]. They share 6 factors [1, 2, 4, 7, 14, 28] making 28 the greatest factor 56 and 28 have in common.