| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.58 |
| Score | 0% | 72% |
A tiger in a zoo has consumed 91 pounds of food in 7 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 156 pounds?
| 5 | |
| 3 | |
| 2 | |
| 9 |
If the tiger has consumed 91 pounds of food in 7 days that's \( \frac{91}{7} \) = 13 pounds of food per day. The tiger needs to consume 156 - 91 = 65 more pounds of food to reach 156 pounds total. At 13 pounds of food per day that's \( \frac{65}{13} \) = 5 more days.
If a car travels 315 miles in 9 hours, what is the average speed?
| 35 mph | |
| 45 mph | |
| 20 mph | |
| 15 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 30% off." If Roger buys two shirts, each with a regular price of $26, how much money will he save?
| $1.30 | |
| $6.50 | |
| $7.80 | |
| $5.20 |
By buying two shirts, Roger will save $26 x \( \frac{30}{100} \) = \( \frac{$26 x 30}{100} \) = \( \frac{$780}{100} \) = $7.80 on the second shirt.
Simplify \( \frac{28}{76} \).
| \( \frac{7}{19} \) | |
| \( \frac{10}{19} \) | |
| \( \frac{8}{17} \) | |
| \( \frac{1}{3} \) |
To simplify this fraction, first find the greatest common factor between them. The factors of 28 are [1, 2, 4, 7, 14, 28] and the factors of 76 are [1, 2, 4, 19, 38, 76]. They share 3 factors [1, 2, 4] making 4 their greatest common factor (GCF).
Next, divide both numerator and denominator by the GCF:
\( \frac{28}{76} \) = \( \frac{\frac{28}{4}}{\frac{76}{4}} \) = \( \frac{7}{19} \)
A triathlon course includes a 100m swim, a 50.7km bike ride, and a 8.9km run. What is the total length of the race course?
| 59.1km | |
| 62.3km | |
| 41.7km | |
| 59.7km |
To add these distances, they must share the same unit so first you need to first convert the swim distance from meters (m) to kilometers (km) before adding it to the bike and run distances which are already in km. To convert 100 meters to kilometers, divide the distance by 1000 to get 0.1km then add the remaining distances:
total distance = swim + bike + run
total distance = 0.1km + 50.7km + 8.9km
total distance = 59.7km