Hai has $100 available to buy USB drives to back up data for his business computers
Hai has $100 available to buy USB drives to back up data for his business computers. Each USB drive has a price of $8, and Hai will pay a sales tax of 7% of the total price of the USB drives. What is the maximum number of USB drives Hai can buy?
- 11
- 12
- 13
- 14
- 15
Answer
The correct answer is A.
You can find the total number of USBs Hai can buy by dividing the total cost of $100 by the cost of 1 USB plus tax for 1 USB.
Cost of 1 USB = $8 × (1 + 0.07)
Number of USBs = 100/(1.07 x 8)
You cannot buy a partial USB, therefore, you must round down to 11 whole USBs.