| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.54 |
| Score | 0% | 71% |
If a car travels 90 miles in 3 hours, what is the average speed?
| 45 mph | |
| 15 mph | |
| 30 mph | |
| 60 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)If a mayor is elected with 61% of the votes cast and 46% of a town's 23,000 voters cast a vote, how many votes did the mayor receive?
| 5,607 | |
| 7,829 | |
| 6,771 | |
| 6,454 |
If 46% of the town's 23,000 voters cast ballots the number of votes cast is:
(\( \frac{46}{100} \)) x 23,000 = \( \frac{1,058,000}{100} \) = 10,580
The mayor got 61% of the votes cast which is:
(\( \frac{61}{100} \)) x 10,580 = \( \frac{645,380}{100} \) = 6,454 votes.
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 45% off." If Roger buys two shirts, each with a regular price of $13, how much money will he save?
| $1.30 | |
| $4.55 | |
| $5.85 | |
| $1.95 |
By buying two shirts, Roger will save $13 x \( \frac{45}{100} \) = \( \frac{$13 x 45}{100} \) = \( \frac{$585}{100} \) = $5.85 on the second shirt.
What is the distance in miles of a trip that takes 7 hours at an average speed of 75 miles per hour?
| 525 miles | |
| 480 miles | |
| 495 miles | |
| 130 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 = \( 75mph \times 7h \)
525 miles
A bread recipe calls for 1\(\frac{7}{8}\) cups of flour. If you only have \(\frac{1}{4}\) cup, how much more flour is needed?
| 1\(\frac{1}{4}\) cups | |
| 2\(\frac{7}{8}\) cups | |
| 1 cups | |
| 1\(\frac{5}{8}\) cups |
The amount of flour you need is (1\(\frac{7}{8}\) - \(\frac{1}{4}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{15}{8} \) - \( \frac{2}{8} \)) cups
\( \frac{13}{8} \) cups
1\(\frac{5}{8}\) cups