| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
What is the greatest common factor of 20 and 56?
| 4 | |
| 8 | |
| 19 | |
| 11 |
The factors of 20 are [1, 2, 4, 5, 10, 20] and the factors of 56 are [1, 2, 4, 7, 8, 14, 28, 56]. They share 3 factors [1, 2, 4] making 4 the greatest factor 20 and 56 have in common.
The total water usage for a city is 5,000 gallons each day. Of that total, 12% is for personal use and 38% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 3,200 | |
| 1,300 | |
| 4,200 | |
| 9,000 |
38% of the water consumption is industrial use and 12% is personal use so (38% - 12%) = 26% more water is used for industrial purposes. 5,000 gallons are consumed daily so industry consumes \( \frac{26}{100} \) x 5,000 gallons = 1,300 gallons.
A factor is a positive __________ that divides evenly into a given number.
improper fraction |
|
integer |
|
mixed number |
|
fraction |
A factor is a positive integer that divides evenly into a given number. For example, the factors of 8 are 1, 2, 4, and 8.
The __________ is the greatest factor that divides two integers.
absolute value |
|
greatest common factor |
|
greatest common multiple |
|
least common multiple |
The greatest common factor (GCF) is the greatest factor that divides two integers.
Bob loaned Roger $1,200 at an annual interest rate of 1%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $12 | |
| $75 | |
| $35 | |
| $33 |
The yearly interest charged on this loan is the annual interest rate multiplied by the amount borrowed:
interest = annual interest rate x loan amount
i = (\( \frac{6}{100} \)) x $1,200
i = 0.01 x $1,200
i = $12