Que: Item A attracts a sales tax rate of $0.54 per $25. What is the sales tax rate, as a percent, for item B......

[Max@Math Revolution]

Que: Item A attracts a sales tax rate of $0.54 per $25. What is the sales tax rate, as a percent, for item B that attracts four times as much as the rate for item A?

(A) 216%
(B) 86.4%
(C) 8.64%
(D) 2.16%
(E) 0.135%

[Max@Math Revolution]

Solution: Tax paid on $25 = $0.54

Thus, a tax, which is four times as much as the above, would be $(0.54 × 4) = $2.16 on $25.

Thus, the tax rate = \(\frac{\text{2.16}}{\text{}25}\) = 0.0864

Thus, this tax, expressed as a percentage = 0.0864 = 8.64 × \(\frac{\text{1}}{100}\) = 8.64%.

Therefore, C is the correct answer.

Answer C