Q1. What is 20% of 800?
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Answer: B. 160
20% of 800 = 20/100 × 800 = 160.
SSC CGL Quantitative Aptitude Intermediate Practice Set 2
10 intermediate questions. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Percentage, Profit and Loss, Simple Interest, Average, Ratio and Proportion, Time and Work, LCM and HCF, Algebra
Score: 0 / 0
Q2. A shopkeeper buys a watch for ₹1600 and sells it for ₹1840. What is his profit percentage?
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Answer: D. 15%
Profit = 1840 − 1600 = 240. Profit % = 240/1600 × 100 = 15%.
Q3. Find the simple interest on ₹4000 at 6% per annum for 5 years (in ₹).
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Answer: B. 1200
SI = 4000 × 6 × 5 / 100 = ₹1200.
Q4. Find the average of 80, 36, 14, 69, 89, 18.
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Answer: D. 51
Sum = 306, count = 6, average = 306/6 = 51.
Q5. ₹240 is divided between A and B in the ratio 7:9. What is A's share (in ₹)?
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Answer: B. 105
One part = 240/16 = 15. A's share = 7 × 15 = ₹105.
Q6. A can finish a work in 10 days and B in 15 days. Working together, in how many days will they finish it?
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Answer: B. 6
One day's work = 1/10 + 1/15 = 1/6. Time = 6 days.
Q7. What is the HCF of 8 and 20?
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Answer: C. 4
Factors common to 8 and 20: the largest is 4.
Q8. What is the LCM of 4 and 9?
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Answer: D. 36
HCF(4, 9) = 1, so LCM = 4 × 9 / 1 = 36.
Q9. If 3x + 19 = 31, what is the value of x?
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Answer: B. 4
3x = 31 − 19 = 12, so x = 12/3 = 4.
Q10. What is 5% of 400?
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Answer: B. 20
5% of 400 = 5/100 × 400 = 20.