Final answer:
To find the percentage of members who voted in the French club election, divide the number of voters by the total number of members and multiply by 100. Of the 75 total members, 21 voted, resulting in exactly 28.00% of the members voting. Hence, the correct answer is (b) 28%.
Step-by-step explanation:
To calculate the percentage of the members who voted in the French club election, the formula percentage of voters = (number of voters / total number of members) × 100 is used. In this case, there were 21 members who voted and 54 members who did not vote, which means that the total number of members is 21 (voters) + 54 (non-voters) = 75 members.
The percentage of the vote is therefore (21 / 75) × 100 = 28%. To ensure accuracy, if we do the math precisely, it's actually 28.00%, which can be rounded to two decimal places to give 28.00%. The correct answer is (b) 28%.