What is 8 percent of 20 percent of 40?

Correct option is B

Given:

8 percent of 20 percent of 40

Solution:

20% of 40:

​$$20\% \times 40 = \frac{20}{100} \times 40 = 8$$

​​8% of 8:

​$$8\% \times 8 = \frac{8}{100} \times 8 = 0.64$$

So, 8 percent of 20 percent of 40 is 0.64.

Thus, the correct answer is (a).