If 1/5 of the keyboards are not working out of a total of 3,000, how many keyboards are working?

This question requires basic fraction calculation and subtraction to determine the number of working keyboards. Understanding how to calculate a fraction of a whole and then subtract it is key.

• First, calculate the number of keyboards that are not working: 1/5 of 3,000. (1/5) * 3,000 = 600 keyboards.
• Next, subtract the number of non-working keyboards from the total number of keyboards to find how many are working: 3,000 - 600 = 2,400 keyboards.
• The correct answer is 2400.
• Options 1000, 1500, and 2000 are incorrect. These values might result from miscalculations, such as incorrectly determining the fraction or performing the wrong operation (e.g., calculating 2/5 or 1/3 instead of 4/5 working).