| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.38 |
| Score | 0% | 68% |
What is the least common multiple of 4 and 10?
| 29 | |
| 12 | |
| 14 | |
| 20 |
The first few multiples of 4 are [4, 8, 12, 16, 20, 24, 28, 32, 36, 40] and the first few multiples of 10 are [10, 20, 30, 40, 50, 60, 70, 80, 90]. The first few multiples they share are [20, 40, 60, 80] making 20 the smallest multiple 4 and 10 have in common.
Ezra loaned Jennifer $1,300 at an annual interest rate of 8%. If no payments are made, what is the total amount owed at the end of the first year?
| $1,378 | |
| $1,339 | |
| $1,417 | |
| $1,404 |
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 $1,300
i = 0.08 x $1,300
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $1,300 + $104Which of the following is a mixed number?
\({a \over 5} \) |
|
\(1 {2 \over 5} \) |
|
\({5 \over 7} \) |
|
\({7 \over 5} \) |
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.
| 0.3 | |
| 1.6 | |
| 1 | |
| 0.8 |
1
A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 5% off." If Ezra buys two shirts, each with a regular price of $45, how much will he pay for both shirts?
| $54.00 | |
| $87.75 | |
| $51.75 | |
| $58.50 |
By buying two shirts, Ezra will save $45 x \( \frac{5}{100} \) = \( \frac{$45 x 5}{100} \) = \( \frac{$225}{100} \) = $2.25 on the second shirt.
So, his total cost will be
$45.00 + ($45.00 - $2.25)
$45.00 + $42.75
$87.75