| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.40 |
| Score | 0% | 68% |
How many 2\(\frac{1}{2}\) gallon cans worth of fuel would you need to pour into an empty 10 gallon tank to fill it exactly halfway?
| 2 | |
| 3 | |
| 5 | |
| 6 |
To fill a 10 gallon tank exactly halfway you'll need 5 gallons of fuel. Each fuel can holds 2\(\frac{1}{2}\) gallons so:
cans = \( \frac{5 \text{ gallons}}{2\frac{1}{2} \text{ gallons}} \) = 2
If a car travels 90 miles in 2 hours, what is the average speed?
| 45 mph | |
| 75 mph | |
| 60 mph | |
| 50 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 bread recipe calls for 2 cups of flour. If you only have \(\frac{1}{2}\) cup, how much more flour is needed?
| 1\(\frac{5}{8}\) cups | |
| 1\(\frac{1}{2}\) cups | |
| 2\(\frac{7}{8}\) cups | |
| 1 cups |
The amount of flour you need is (2 - \(\frac{1}{2}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{16}{8} \) - \( \frac{4}{8} \)) cups
\( \frac{12}{8} \) cups
1\(\frac{1}{2}\) cups
Which of the following is a mixed number?
\(1 {2 \over 5} \) |
|
\({5 \over 7} \) |
|
\({7 \over 5} \) |
|
\({a \over 5} \) |
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 tiger in a zoo has consumed 65 pounds of food in 5 days. If the tiger continues to eat at the same rate, in how many more days will its total food consumtion be 156 pounds?
| 1 | |
| 10 | |
| 7 | |
| 8 |
If the tiger has consumed 65 pounds of food in 5 days that's \( \frac{65}{5} \) = 13 pounds of food per day. The tiger needs to consume 156 - 65 = 91 more pounds of food to reach 156 pounds total. At 13 pounds of food per day that's \( \frac{91}{13} \) = 7 more days.