| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
Damon loaned Monty $1,200 at an annual interest rate of 9%. If no payments are made, what is the interest owed on this loan at the end of the first year?
| $105 | |
| $88 | |
| $108 | |
| $78 |
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 = 0.09 x $1,200
i = $108
Roger loaned Diane $400 at an annual interest rate of 7%. If no payments are made, what is the total amount owed at the end of the first year?
| $432 | |
| $408 | |
| $428 | |
| $404 |
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 $400
i = 0.07 x $400
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $400 + $28What is the least common multiple of 4 and 8?
| 30 | |
| 26 | |
| 4 | |
| 8 |
The first few multiples of 4 are [4, 8, 12, 16, 20, 24, 28, 32, 36, 40] and the first few multiples of 8 are [8, 16, 24, 32, 40, 48, 56, 64, 72, 80]. The first few multiples they share are [8, 16, 24, 32, 40] making 8 the smallest multiple 4 and 8 have in common.
The total water usage for a city is 40,000 gallons each day. Of that total, 29% is for personal use and 62% is for industrial use. How many more gallons of water each day is consumed for industrial use over personal use?
| 13,200 | |
| 1,000 | |
| 1,950 | |
| 1,700 |
62% of the water consumption is industrial use and 29% is personal use so (62% - 29%) = 33% more water is used for industrial purposes. 40,000 gallons are consumed daily so industry consumes \( \frac{33}{100} \) x 40,000 gallons = 13,200 gallons.
Which of the following is a mixed number?
\({7 \over 5} \) |
|
\(1 {2 \over 5} \) |
|
\({a \over 5} \) |
|
\({5 \over 7} \) |
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.