Govt. Exams
Entrance Exams
Let number = 100. After 25% increase = 125. After 20% decrease on 125 = 125 × 0.8 = 100. Net change = 0%. Wait, recalculate: 100 → 125 → 125 × 0.8 = 100. Actually net is 0%, but let me verify: 100 × 1.25 × 0.8 = 100. Net change is 0%. Actually the answer should be B.
To find the new workforce after an 18% increase, we calculate the increase amount and add it to the original number of employees.
Step 1: Identify the increase percentage
The company increased its workforce by 18%, meaning we need to find what 18% of 500 employees represents.
\[
\text{Increase} = 18\% \text{ of } 500 = \frac{18}{100} \times 500
\]
Step 2: Calculate the number of new employees added
\[
\text{Increase} = 0.18 \times 500 = 90 \text{ employees}
\]
Step 3: Find the total workforce in 2025
Add the increase to the original number of employees:
\[
\text{Total employees in 2025} = 500 + 90 = 590 \text{ employees}
\]
Alternatively (using multiplier method):
A 18% increase means the new total is \(100\% + 18\% = 118\%\) of the original:
\[
\text{New total} = 500 \times 1.18 = 590 \text{ employees}
\]
Answer: The company now has 590 employees (Option A)
Total parts = 3 + 2 = 5. Girls = 2/5 = 0.4 = 40%.
New production = 5000 × (1 - 0.30) = 5000 × 0.70 = 3500 units.
Average = (65 + 75)/2 = 140/2 = 70%.
Increase = 30,000 - 25,000 = 5,000. Percentage = (5,000/25,000) × 100 = 20%.
Let MP = x. SP = x × (1 - 0.12) = 0.88x = 440. x = 440/0.88 = 500.
Let original price = 100. After 20% increase: 120. After 10% increase: 120 × 1.10 = 132. Total increase = 32%.
To find the total salary, we need to determine what percentage is saved, then use it to calculate the full amount.
Step 1: Find the percentage spent
The man spends money on food and rent:
Step 2: Find the percentage saved
Since total salary = 100%, the remaining amount is saved:
Step 3: Set up the equation
If 30% of his salary equals ₹3000:
Step 4: Solve for total salary
Verification: 40% of ₹10,000 = ₹4,000 (food); 30% of ₹10,000 = ₹3,000 (rent); Remaining = ₹10,000 − ₹7,000 = ₹3,000 ✓
Answer: The total monthly salary is \(₹10,000\) (Option A)
Let original price = 100. After 15% increase: 115. After 15% decrease: 115 × 0.85 = 97.75. Change = 97.75 - 100 = -2.25. Percentage change = -2.25%.
