Final answer:
The result when the number 68 is decreased by 1.8% is 66.68. Hence the correct answer is option B
Step-by-step explanation:
To find the result when a number is decreased by a certain percentage, you can use the formula:
Result = Number - (Percentage * Number)
In this case, the number is 68 and the percentage is 1.8%. So, the result would be:
Result = 68 - (0.018 * 68)
Calculating this, we get the result as 66.68.
Hence the correct answer is option B