The HCF of two numbers is 15 and their LCM is 450. If one of the numbers is 90, what is the other number?

The correct answer is B: 75. Using HCF × LCM = Product of two numbers: 15 × 450 = 90 × Other number 6750 = 90 × Other number Other number = 6750 ÷ 90 = 75 Verification: HCF(90, 75) = 15 ✓ and LCM(90, 75) = 450 ✓

Simple interest on Rs. 8000 at 12% per annum for 2.5 years is:

The correct answer is A: Rs. 2400. Simple interest is calculated as a percentage of the principal amount and remains constant throughout the investment period. Step 1: [Identify the Given Values] We need to extract all the information from the problem before applying the formula. $$\text{Principal (P)} = \text{Rs. } 8000$$ $$\text{Ra

A shopkeeper marks goods at 35% above cost price and offers a discount of 15%. What is the net profit percentage?

The correct answer is A: 14.75%. Step 1: Let CP = ₹100. Step 2: Marked Price (MP) = 100 + 35% of 100 = ₹135. Step 3: Discount = 15% of 135 = ₹20.25. Step 4: Selling Price = 135 - 20.25 = ₹114.75. Step 5: Profit% = (114.75 - 100)/100 × 100 = 14.75%. So option A is correct.

If the sum of digits of a number is 21 and the number is divisible by 3, which statement is true?

The correct answer is D: Cannot determine without the actual number. Sum of digits = 21 means divisible by 3. But divisibility by 9 requires sum = 18, 27, etc. Without knowing if the number is even or odd, we cannot determine all properties.

If the product of two numbers is 2160 and their HCF is 12, find their LCM.

The correct answer is A: 180. For any two numbers a and b: a × b = HCF(a,b) × LCM(a,b). So 2160 = 12 × LCM. LCM = 2160/12 = 180.

Corporate & IT Interview Preparation

Quantitative Aptitude

Aptitude · Reasoning · English · CS — Corporate & Campus Interview Prep

428 Questions 7 Topics Take Test

Showing 381–390 of 428 questions

Q.381 Easy Percentage

A man's salary increased from ₹30,000 to ₹36,000. What is the percentage increase?

A 15%

B 18%

C 20%

D 22%

Correct Answer: C. 20%

Explanation:

Increase = 6000. Percentage = (6000/30000) × 100 = 20%.

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Q.382 Easy Percentage

If the cost price is ₹2000 and profit is 15%, what is the selling price?

A ₹2200

B ₹2250

C ₹2300

D ₹2350

Correct Answer: C. ₹2300

Explanation:

SP = 2000 × 1.15 = 2300.

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Q.383 Easy Percentage

A shopkeeper sells an item at ₹450 after giving a 10% discount on the marked price. What is the marked price?

A ₹500

B ₹550

C ₹480

D ₹520

Correct Answer: A. ₹500

Explanation:

If SP = ₹450 and discount = 10%, then MP × 0.9 = 450. MP = 450/0.9 = ₹500

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Q.384 Easy Percentage

Two successive discounts of 20% and 15% are given on an article. What is the effective discount percentage?

A 32%

B 35%

C 38%

D 40%

Correct Answer: A. 32%

Explanation:

Effective discount = 20 + 15 - (20×15)/100 = 35 - 3 = 32%

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Q.385 Easy Percentage

A's salary is 40% more than B's salary. If their combined salary is ₹84,000, what is B's salary?

A ₹35,000

B ₹45,000

C ₹50,000

D ₹40,000

Correct Answer: A. ₹35,000

Explanation:

Let B's salary = x. A's salary = 1.4x. x + 1.4x = 84,000. 2.4x = 84,000. x = ₹35,000

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Q.386 Easy Percentage

If the population of a city increases by 5% annually, what will be the population after 2 years if the current population is 10,00,000?

A 11,02,500

B 11,05,000

C 11,10,250

D 11,15,000

Correct Answer: A. 11,02,500

Explanation:

Population after 2 years = 10,00,000 × (1.05)² = 10,00,000 × 1.1025 = 11,02,500

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Q.387 Easy Percentage

A vendor buys apples at ₹30 per kg and sells at ₹42 per kg. What is his profit percentage?

A 30%

B 40%

C 50%

D 35%

Correct Answer: B. 40%

Explanation:

Profit% = [(42-30)/30] × 100 = (12/30) × 100 = 40%

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Q.388 Easy Percentage

A trader buys an item for ₹800 and sells it at a loss of 12.5%. What is the selling price?

A ₹700

B ₹750

C ₹675

D ₹725

Correct Answer: A. ₹700

Explanation:

SP = CP × (1 - loss%) = 800 × (1 - 0.125) = 800 × 0.875 = ₹700

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Q.389 Easy Percentage

The price of petrol increased from ₹95 to ₹114 per liter in 2024. What is the percentage increase?

A 18%

B 20%

C 22%

D 25%

Correct Answer: B. 20%

Explanation:

Percentage increase = [(114-95)/95] × 100 = (19/95) × 100 = 20%

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Q.390 Easy Percentage

In 2024, a company's revenue was ₹50 crore. In 2025, it is projected to be 35% more. What is the projected 2025 revenue?

A ₹67.5 crore

B ₹70 crore

C ₹65 crore

D ₹72.5 crore

Correct Answer: A. ₹67.5 crore

Explanation:

Projected revenue = 50 × 1.35 = ₹67.5 crore

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