| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Which of the following is a mixed number?
\({a \over 5} \) |
|
\(1 {2 \over 5} \) |
|
\({7 \over 5} \) |
|
\({5 \over 7} \) |
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 5% off." If Damon buys two shirts, each with a regular price of $38, how much will he pay for both shirts?
| $1.90 | |
| $74.10 | |
| $49.40 | |
| $43.70 |
By buying two shirts, Damon will save $38 x \( \frac{5}{100} \) = \( \frac{$38 x 5}{100} \) = \( \frac{$190}{100} \) = $1.90 on the second shirt.
So, his total cost will be
$38.00 + ($38.00 - $1.90)
$38.00 + $36.10
$74.10
| 2.7 | |
| 1.5 | |
| 1.0 | |
| 1 |
1
16 members of a bridal party need transported to a wedding reception but there are only 3 4-passenger taxis available to take them. How many will need to find other transportation?
| 9 | |
| 6 | |
| 4 | |
| 5 |
There are 3 4-passenger taxis available so that's 3 x 4 = 12 total seats. There are 16 people needing transportation leaving 16 - 12 = 4 who will have to find other transportation.
If a car travels 40 miles in 2 hours, what is the average speed?
| 25 mph | |
| 30 mph | |
| 60 mph | |
| 20 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)