| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
| 2.1 | |
| 1 | |
| 1.0 | |
| 3.2 |
1
The total water usage for a city is 25,000 gallons each day. Of that total, 16% 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?
| 10,350 | |
| 4,800 | |
| 6,500 | |
| 9,000 |
42% of the water consumption is industrial use and 16% is personal use so (42% - 16%) = 26% more water is used for industrial purposes. 25,000 gallons are consumed daily so industry consumes \( \frac{26}{100} \) x 25,000 gallons = 6,500 gallons.
9 members of a bridal party need transported to a wedding reception but there are only 2 4-passenger taxis available to take them. How many will need to find other transportation?
| 3 | |
| 5 | |
| 2 | |
| 1 |
There are 2 4-passenger taxis available so that's 2 x 4 = 8 total seats. There are 9 people needing transportation leaving 9 - 8 = 1 who will have to find other transportation.
Which of the following is not an integer?
1 |
|
\({1 \over 2}\) |
|
0 |
|
-1 |
An integer is any whole number, including zero. An integer can be either positive or negative. Examples include -77, -1, 0, 55, 119.
What is the greatest common factor of 40 and 24?
| 4 | |
| 23 | |
| 7 | |
| 8 |
The factors of 40 are [1, 2, 4, 5, 8, 10, 20, 40] and the factors of 24 are [1, 2, 3, 4, 6, 8, 12, 24]. They share 4 factors [1, 2, 4, 8] making 8 the greatest factor 40 and 24 have in common.