| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.86 |
| Score | 0% | 77% |
Alex loaned Latoya $600 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?
| $612 | |
| $618 | |
| $606 | |
| $648 |
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 $600
i = 0.08 x $600
No payments were made so the total amount due is the original amount + the accumulated interest:
total = $600 + $48A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 10% off." If Alex buys two shirts, each with a regular price of $32, how much will he pay for both shirts?
| $44.80 | |
| $60.80 | |
| $3.20 | |
| $35.20 |
By buying two shirts, Alex will save $32 x \( \frac{10}{100} \) = \( \frac{$32 x 10}{100} \) = \( \frac{$320}{100} \) = $3.20 on the second shirt.
So, his total cost will be
$32.00 + ($32.00 - $3.20)
$32.00 + $28.80
$60.80
What is the distance in miles of a trip that takes 1 hour at an average speed of 75 miles per hour?
| 280 miles | |
| 150 miles | |
| 75 miles | |
| 250 miles |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for distance:
distance = \( \text{speed} \times \text{time} \)
distance = \( 75mph \times 1h \)
75 miles
If a car travels 35 miles in 1 hour, what is the average speed?
| 45 mph | |
| 65 mph | |
| 25 mph | |
| 35 mph |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)How many hours does it take a car to travel 420 miles at an average speed of 70 miles per hour?
| 3 hours | |
| 4 hours | |
| 2 hours | |
| 6 hours |
Average speed in miles per hour is the number of miles traveled divided by the number of hours:
speed = \( \frac{\text{distance}}{\text{time}} \)Solving for time:
time = \( \frac{\text{distance}}{\text{speed}} \)
time = \( \frac{420mi}{70mph} \)
6 hours