| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
If a car travels 90 miles in 6 hours, what is the average speed?
| 15 mph | |
| 35 mph | |
| 65 mph | |
| 45 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)What is the greatest common factor of 44 and 56?
| 36 | |
| 41 | |
| 4 | |
| 13 |
The factors of 44 are [1, 2, 4, 11, 22, 44] and the factors of 56 are [1, 2, 4, 7, 8, 14, 28, 56]. They share 3 factors [1, 2, 4] making 4 the greatest factor 44 and 56 have in common.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 45% off." If Alex buys two shirts, each with a regular price of $12, how much will he pay for both shirts?
| $13.80 | |
| $5.40 | |
| $12.60 | |
| $18.60 |
By buying two shirts, Alex will save $12 x \( \frac{45}{100} \) = \( \frac{$12 x 45}{100} \) = \( \frac{$540}{100} \) = $5.40 on the second shirt.
So, his total cost will be
$12.00 + ($12.00 - $5.40)
$12.00 + $6.60
$18.60
If a mayor is elected with 61% of the votes cast and 60% of a town's 15,000 voters cast a vote, how many votes did the mayor receive?
| 5,490 | |
| 5,220 | |
| 7,380 | |
| 6,210 |
If 60% of the town's 15,000 voters cast ballots the number of votes cast is:
(\( \frac{60}{100} \)) x 15,000 = \( \frac{900,000}{100} \) = 9,000
The mayor got 61% of the votes cast which is:
(\( \frac{61}{100} \)) x 9,000 = \( \frac{549,000}{100} \) = 5,490 votes.
Find the average of the following numbers: 10, 8, 13, 5.
| 14 | |
| 9 | |
| 7 | |
| 6 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{10 + 8 + 13 + 5}{4} \) = \( \frac{36}{4} \) = 9