| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.39 |
| Score | 0% | 68% |
7 members of a bridal party need transported to a wedding reception but there are only 2 2-passenger taxis available to take them. How many will need to find other transportation?
| 8 | |
| 3 | |
| 6 | |
| 7 |
There are 2 2-passenger taxis available so that's 2 x 2 = 4 total seats. There are 7 people needing transportation leaving 7 - 4 = 3 who will have to find other transportation.
A bread recipe calls for 2\(\frac{1}{2}\) cups of flour. If you only have \(\frac{1}{8}\) cup, how much more flour is needed?
| 2\(\frac{1}{2}\) cups | |
| 2\(\frac{1}{4}\) cups | |
| \(\frac{1}{2}\) cups | |
| 2\(\frac{3}{8}\) cups |
The amount of flour you need is (2\(\frac{1}{2}\) - \(\frac{1}{8}\)) cups. Rewrite the quantities so they share a common denominator and subtract:
(\( \frac{20}{8} \) - \( \frac{1}{8} \)) cups
\( \frac{19}{8} \) cups
2\(\frac{3}{8}\) cups
Find the average of the following numbers: 14, 12, 16, 10.
| 13 | |
| 15 | |
| 12 | |
| 14 |
To find the average of these 4 numbers add them together then divide by 4:
\( \frac{14 + 12 + 16 + 10}{4} \) = \( \frac{52}{4} \) = 13
What is \( \frac{4}{6} \) ÷ \( \frac{3}{7} \)?
| 1\(\frac{5}{9}\) | |
| \(\frac{1}{24}\) | |
| \(\frac{8}{45}\) | |
| \(\frac{4}{63}\) |
To divide fractions, invert the second fraction and then multiply:
\( \frac{4}{6} \) ÷ \( \frac{3}{7} \) = \( \frac{4}{6} \) x \( \frac{7}{3} \)
To multiply fractions, multiply the numerators together and then multiply the denominators together:
\( \frac{4}{6} \) x \( \frac{7}{3} \) = \( \frac{4 x 7}{6 x 3} \) = \( \frac{28}{18} \) = 1\(\frac{5}{9}\)
The total water usage for a city is 40,000 gallons each day. Of that total, 10% is for personal use and 42% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 3,100 | |
| 12,800 | |
| 1,600 | |
| 3,150 |
42% of the water consumption is industrial use and 10% is personal use so (42% - 10%) = 32% more water is used for industrial purposes. 40,000 gallons are consumed daily so industry consumes \( \frac{32}{100} \) x 40,000 gallons = 12,800 gallons.