A shopkeeper offers a 30% discount on marked price. If the marked price is Rs. 1000, what is the selling price?

The correct answer is B: Rs. 700. Discount = 30% of 1000 = 300. Selling price = 1000 - 300 = Rs. 700

Four numbers are in the ratio 1:2:3:4 with HCF = 7. Find their LCM.

The correct answer is B: 1680. Numbers are 7, 14, 21, 28. 7 = 7, 14 = 2 × 7, 21 = 3 × 7, 28 = 2² × 7. LCM = 2² × 3 × 7 = 4 × 3 × 7 × 2 = 1680.

A student scored 72% in Math, 68% in Science, and 80% in English. What is the average percentage?

The correct answer is B: 73.33%. Average percentage = (72 + 68 + 80)/3 = 220/3 = 73.33%

The average of 8 consecutive even numbers is 15. Which is the smallest number?

The correct answer is B: 4. For 8 consecutive even numbers with average 15: Let smallest = x. Numbers are x, x+2, x+4, ..., x+14. Average = (x + x+14)/2 = x+7 = 15. So x = 8. But average of even numbers can't be odd. Question error - assuming average is 14: x+7 = 14, x = 7 (odd). If average is 16: x+7 = 16, x = 9 (odd). Recons

Pipe A fills a tank in 24 minutes, Pipe B in 36 minutes. If both work together, how long to fill the tank?

The correct answer is B: 14.4 minutes. Combined rate = 1/24 + 1/36 = (3+2)/72 = 5/72. Time = 72/5 = 14.4 minutes

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Quantitative aptitude questions for competitive exams

12 Q 7 Topics Take Mock Test

Difficulty: All Easy Medium Hard 11–12 of 12

Topics in Quantitative Aptitude

All Numbers 499 HCF and LCM 151 Profit and Loss 100 Time and Work 100 Percentage 100 Simple Interest 50 Average 50

Q.11 Hard Percentage

If the price of rice increases by 25%, by what percentage should consumption be reduced to keep expenditure constant?

A 16%

B 18%

C 20%

D 25%

Correct Answer: C. 20%

EXPLANATION

New price = 1.25P. For constant expenditure: New consumption = 1/1.25 = 0.8. Reduction = 20%.

Test

Q.12 Hard Percentage Marked Price Calculation

The cost price of an item is ₹400. After giving a discount of 15%, the profit earned is 25%. What was the marked price?

A ₹588.24

B ₹588.50

C ₹589.50

D ₹590.25

Correct Answer: A. ₹588.24

EXPLANATION

Step 1: Profit = 25% of ₹400 = 0.25 × 400 = ₹100.

Step 2: Selling Price = Cost Price + Profit = 400 + 100 = ₹500.

Step 3: Let Marked Price = M.

After 15% discount: M × (1 - 0.15) = 500, so M × 0.85 = 500, M = 500/0.85 = ₹588.24 (approximately).

Therefore, option A is correct.

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Quantitative Aptitude Percentage

Quantitative Aptitude
Percentage