| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.65 |
| Score | 0% | 73% |
Which of the following is a mixed number?
\({5 \over 7} \) |
|
\(1 {2 \over 5} \) |
|
\({7 \over 5} \) |
|
\({a \over 5} \) |
A rational number (or fraction) is represented as a ratio between two integers, a and b, and has the form \({a \over b}\) where a is the numerator and b is the denominator. An improper fraction (\({5 \over 3} \)) has a numerator with a greater absolute value than the denominator and can be converted into a mixed number (\(1 {2 \over 3} \)) which has a whole number part and a fractional part.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 35% off." If Frank buys two shirts, each with a regular price of $37, how much money will he save?
| $14.80 | |
| $12.95 | |
| $5.55 | |
| $18.50 |
By buying two shirts, Frank will save $37 x \( \frac{35}{100} \) = \( \frac{$37 x 35}{100} \) = \( \frac{$1295}{100} \) = $12.95 on the second shirt.
Betty scored 88% on her final exam. If each question was worth 4 points and there were 360 possible points on the exam, how many questions did Betty answer correctly?
| 69 | |
| 90 | |
| 73 | |
| 79 |
Betty scored 88% on the test meaning she earned 88% of the possible points on the test. There were 360 possible points on the test so she earned 360 x 0.88 = 316 points. Each question is worth 4 points so she got \( \frac{316}{4} \) = 79 questions right.
Which of these numbers is a factor of 72?
| 26 | |
| 68 | |
| 4 | |
| 30 |
The factors of a number are all positive integers that divide evenly into the number. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.
How many hours does it take a car to travel 495 miles at an average speed of 55 miles per hour?
| 9 hours | |
| 2 hours | |
| 4 hours | |
| 6 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 = \( \frac{495mi}{55mph} \)
9 hours