Q.11
Medium
The simple interest on Rs. 2000 for 3 years at 8% per annum is
A
Rs. 480
B
Rs. 600
C
Rs. 400
D
Rs. 520
Correct Answer:
A. Rs. 480
Explanation:
SI = (P × R × T)/100 = (2000 × 8 × 3)/100 = 480
Q.12
Medium
Two numbers are in the ratio 5:8. If their difference is 24, what is the larger number?
Explanation:
Let numbers be 5x and 8x. Difference: 8x - 5x = 24 → 3x = 24 → x = 8. Larger = 8(8) = 64
Q.13
Medium
If a person spends 30% of his income on food and 40% on rent, what percentage is left?
Explanation:
Total spent = 30% + 40% = 70%. Remaining = 100% - 70% = 30%
Q.14
Medium
A number when divided by 5 leaves remainder 3. Which of the following could be that number?
Explanation:
23 ÷ 5 = 4 remainder 3. (or 23 = 5×4 + 3)
Q.15
Medium
The area of a rectangle is 96 sq cm. If its length is 12 cm, what is its breadth?
A
8 cm
B
10 cm
C
12 cm
D
16 cm
Explanation:
Area = Length × Breadth → 96 = 12 × B → B = 8 cm
Q.16
Medium
If the compound interest on Rs. 1000 for 2 years at 10% per annum is calculated, what is the final amount?
A
Rs. 1210
B
Rs. 1200
C
Rs. 1220
D
Rs. 1300
Correct Answer:
A. Rs. 1210
Explanation:
A = P(1 + R/100)^T = 1000(1.1)² = 1000 × 1.21 = 1210
Q.17
Medium
If 8 workers can complete a task in 12 days, how many days will 6 workers take to complete the same task?
A
14 days
B
15 days
C
16 days
D
18 days
Correct Answer:
C. 16 days
Explanation:
Total work = 8 × 12 = 96 worker-days. For 6 workers: 96/6 = 16 days
Q.18
Medium
The average of five numbers is 24. If four of them are 18, 22, 26, and 28, what is the fifth number?
Explanation:
Sum of five numbers = 24 × 5 = 120. Sum of four numbers = 18+22+26+28 = 94. Fifth number = 120-94 = 26
Q.19
Medium
A mixture contains 60 liters of milk and 40 liters of water. If 20 liters of mixture is removed and replaced with pure milk, what is the new ratio of milk to water?
Explanation:
Initial ratio milk:water = 60:40 = 3:2. Removing 20L mixture removes 12L milk and 8L water. New milk = 60-12+20 = 68L, water = 40-8 = 32L. Ratio = 68:32 = 17:8... Let me recalculate: Ratio = 60:40 simplified. After removing 20L (in ratio 3:2): milk 48, water 32. Add 20L milk: milk 68, water 32. Ratio = 68:32 = 17:8. Check options... Actually 68/32 ≈ 2.125, which is closer to 2:1 but let's verify: 68:32 = 17:8 (not matching). Actually should be approximately 3:1 range.
Q.20
Medium
A man invests Rs. 10,000 at 8% per annum for 2 years at simple interest. What is the total amount after 2 years?
A
Rs. 11,400
B
Rs. 11,600
C
Rs. 11,800
D
Rs. 12,000
Correct Answer:
B. Rs. 11,600
Explanation:
Simple Interest = (P × R × T)/100 = (10000 × 8 × 2)/100 = 1600. Total = 10000 + 1600 = Rs. 11,600
