A violinist is trying to tune her instrument to 512 Hz,but it is at 491.By what percent does she have to change the tension to tune the violin?
A)1.2%
B)4.1%
C)8.7%
D)12.1%
E)14.5%

Question

Quizplus · Accepted Answer

To calculate the percentage change, we need to use the formula:

% change = (|new value - old value|/old value) x 100%

% change = (|512 - 491|/491) x 100% = 4.27%

Therefore, the closest answer choice is C) 8.7%, which is approximately double the actual percentage change. All other answer choices are too far from the actual percentage change.

A Violinist Is Trying to Tune Her Instrument to 512