Explanation:

Certainly! Let's analyze the situation and options given:

- The production has decreased by 35% due to a fall in manpower.

- This means the current production is now 65% of the original (100% - 35% = 65%).

- To restore production, we need to make up the 35% deficit.

- If working hours are increased, it will offset the reduction.

- If 65% represents the current production level with reduced hours, increasing hours to 100% production requires an additional 35% relative to the reduced level.

- Mathematically, this means increasing by \((35 ÷ 65) × 100\)%.

- Calculating gives approximately 53.85%.

Here's the evaluation of each option:

1. 58.35% - Higher than needed.

2. 55.83% - Also higher.

3. 53.85% - Matches our calculation perfectly.

4. 55.38% - Slightly higher than necessary.