| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
What is the distance in miles of a trip that takes 7 hours at an average speed of 60 miles per hour?
| 50 miles | |
| 55 miles | |
| 420 miles | |
| 320 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 = \( 60mph \times 7h \)
420 miles
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Damon buys two shirts, each with a regular price of $28, how much will he pay for both shirts?
| $8.40 | |
| $36.40 | |
| $47.60 | |
| $19.60 |
By buying two shirts, Damon will save $28 x \( \frac{30}{100} \) = \( \frac{$28 x 30}{100} \) = \( \frac{$840}{100} \) = $8.40 on the second shirt.
So, his total cost will be
$28.00 + ($28.00 - $8.40)
$28.00 + $19.60
$47.60
If there were a total of 250 raffle tickets sold and you bought 15 tickets, what's the probability that you'll win the raffle?
| 13% | |
| 11% | |
| 6% | |
| 19% |
You have 15 out of the total of 250 raffle tickets sold so you have a (\( \frac{15}{250} \)) x 100 = \( \frac{15 \times 100}{250} \) = \( \frac{1500}{250} \) = 6% chance to win the raffle.
This property states taht the order of addition or multiplication does not mater. For example, 2 + 5 and 5 + 2 are equivalent.
associative |
|
distributive |
|
PEDMAS |
|
commutative |
The commutative property states that, when adding or multiplying numbers, the order in which they're added or multiplied does not matter. For example, 3 + 4 and 4 + 3 give the same result, as do 3 x 4 and 4 x 3.
11 members of a bridal party need transported to a wedding reception but there are only 3 2-passenger taxis available to take them. How many will need to find other transportation?
| 9 | |
| 5 | |
| 6 | |
| 1 |
There are 3 2-passenger taxis available so that's 3 x 2 = 6 total seats. There are 11 people needing transportation leaving 11 - 6 = 5 who will have to find other transportation.