| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
Find the average of the following numbers: 9, 7, 12, 4.
| 8 | |
| 12 | |
| 13 | |
| 7 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{9 + 7 + 12 + 4}{4} \) = \( \frac{32}{4} \) = 8
A factor is a positive __________ that divides evenly into a given number.
fraction |
|
mixed number |
|
improper fraction |
|
integer |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
Betty scored 80% on her final exam. If each question was worth 3 points and there were 120 possible points on the exam, how many questions did Betty answer correctly?
| 32 | |
| 27 | |
| 46 | |
| 33 |
Betty scored 80% on the test meaning she earned 80% of the possible points on the test. There were 120 possible points on the test so she earned 120 x 0.8 = 96 points. Each question is worth 3 points so she got \( \frac{96}{3} \) = 32 questions right.
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 $50, how much will he pay for both shirts?
| $12.50 | |
| $70.00 | |
| $87.50 | |
| $37.50 |
By buying two shirts, Frank will save $50 x \( \frac{25}{100} \) = \( \frac{$50 x 25}{100} \) = \( \frac{$1250}{100} \) = $12.50 on the second shirt.
So, his total cost will be
$50.00 + ($50.00 - $12.50)
$50.00 + $37.50
$87.50
If the ratio of home fans to visiting fans in a crowd is 4:1 and all 31,000 seats in a stadium are filled, how many home fans are in attendance?
| 31,333 | |
| 24,800 | |
| 41,667 | |
| 28,500 |
A ratio of 4:1 means that there are 4 home fans for every one visiting fan. So, of every 5 fans, 4 are home fans and \( \frac{4}{5} \) of every fan in the stadium is a home fan:
31,000 fans x \( \frac{4}{5} \) = \( \frac{124000}{5} \) = 24,800 fans.