Percentages

Let the total number of votes polled be . The first candidate got of the total votes, i.e., .
The second candidate got the remaining votes, i.e., . The difference in votes between the two candidates is given as 500.
Therefore, we can write the equation: Thus, the total number of votes polled is .

Step 1: Let the initial salary be .
The worker's salary is first increased by 5%, so the new salary after the increase is:S_new = S + 0.05S = 1.05S Step 2: Then, the salary is decreased by 5% from the increased salary.
Now, the new salary after the 5% decrease is:S_final = 1.05S - 0.05(1.05S) = 1.05S(1 - 0.05) = 1.05S × 0.95 = 0.9975S Step 3: Calculate the change in salary.
The final salary is 0.9975S, which is slightly less than the initial salary S. The percentage change in salary is:Percentage change = (S_final - S) / S × 100 = (0.9975S - S) / S × 100 = -0.25% This shows a decrease of 0.25%.
Step 4: Conclusion.
The salary decreases by 0.25%, so the correct answer is (1) Decrease in salary 0.25%.