Answer:
84%
Explanation:
Given that :
Number that prefers digital copy = 4
Number who prefers hard copy = 21
Total number of samples =
(digital + hard copy) = 25
Percentage who prefers hard copy :
(Number who prefer hard copy / total number of samples) * 100%
(21 / 25) * 100%
0.84 * 100%
= 84 %