Q1. What is 40% of 1360?
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Answer: C. 544
40% of 1360 = 40/100 × 1360 = 544.
SSC CGL Quantitative Aptitude Beginner Practice Set 3
25 beginner questions. Tap an option to check it, or open “Show answer” for the explanation.
Topics: Percentage, Profit and Loss, Discount, Simple Interest, Compound Interest, Average, Ratio and Proportion, Time and Work, Speed, Time and Distance, LCM and HCF, Number System, Algebra, Problems on Ages, Mensuration, Geometry, Simplification
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Q2. An article is bought for ₹600 and sold at a profit of 30%. What is the selling price (in ₹)?
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Answer: B. 780
SP = 600 × 130/100 = ₹780.
Q3. The marked price of a shirt is ₹8500. A discount of 10% is given. What is the selling price (in ₹)?
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Answer: A. 7650
SP = 8500 × 90/100 = ₹7650.
Q4. Find the simple interest on ₹15500 at 8% per annum for 5 years (in ₹).
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Answer: A. 6200
SI = 15500 × 8 × 5 / 100 = ₹6200.
Q5. Find the compound interest on ₹16000 for 2 years at 5% per annum, compounded annually (in ₹).
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Answer: D. 1640
Amount = 16000 × (105/100)² = ₹17640. CI = 17640 − 16000 = ₹1640.
Q6. Find the average of 91, 50, 73, 28, 13.
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Answer: B. 51
Sum = 255; average = 255/5 = 51.
Q7. ₹238 is divided between A and B in the ratio 2:5. What is A's share (in ₹)?
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Answer: C. 68
A's share = 238 × 2/7 = ₹68.
Q8. A can complete a piece of work in 12 days and B can complete it in 36 days. In how many days can they complete it working together?
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Answer: D. 9 days
Together per day = 1/12 + 1/36 = 1/9. So they need 9 days.
Q9. A truck covers 198 km in 6 hours. What is its average speed?
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Answer: C. 33 km/h
Speed = 198/6 = 33 km/h.
Q10. Find the HCF of 49 and 77.
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Answer: D. 7
49 = 7 × 7, 77 = 7 × 11. Since 7 and 11 share no factor, HCF = 7.
Q11. What is the sum of the first 20 natural numbers?
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Answer: A. 210
Sum = 20 × 21/2 = 210.
Q12. If 2x + 4 = 24, find x.
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Answer: D. 10
2x = 24 − 4 = 20, so x = 20/2 = 10.
Q13. A father is 3 times as old as his son. If the son is 10 years old, what will the father's age be after 7 years?
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Answer: A. 37 years
Father's present age = 3 × 10 = 30. After 7 years: 37 years.
Q14. Find the area of a rectangle with length 24 m and breadth 23 m.
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Answer: D. 552 m²
Area = 24 × 23 = 552 m².
Q15. Two angles of a triangle are 68° and 78°. Find the third angle.
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Answer: A. 34°
Third angle = 180 − 68 − 78 = 34°.
Q16. Simplify: 22 + 11 × 8 − 10
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Answer: C. 100
11 × 8 = 88; 22 + 88 − 10 = 100.
Q17. What is 60% of 1360?
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Answer: B. 816
60% of 1360 = 60/100 × 1360 = 816.
Q18. An article is bought for ₹600 and sold at a profit of 10%. What is the selling price (in ₹)?
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Answer: C. 660
SP = 600 × 110/100 = ₹660.
Q19. The marked price of a shirt is ₹2500. A discount of 40% is given. What is the selling price (in ₹)?
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Answer: D. 1500
SP = 2500 × 60/100 = ₹1500.
Q20. Find the simple interest on ₹14000 at 12% per annum for 4 years (in ₹).
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Answer: C. 6720
SI = 14000 × 12 × 4 / 100 = ₹6720.
Q21. Find the compound interest on ₹3000 for 2 years at 10% per annum, compounded annually (in ₹).
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Answer: D. 630
Amount = 3000 × (110/100)² = ₹3630. CI = 3630 − 3000 = ₹630.
Q22. Find the average of 13, 41, 78, 52.
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Answer: A. 46
Sum = 184; average = 184/4 = 46.
Q23. ₹225 is divided between A and B in the ratio 2:3. What is A's share (in ₹)?
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Answer: B. 90
A's share = 225 × 2/5 = ₹90.
Q24. A can complete a piece of work in 15 days and B can complete it in 30 days. In how many days can they complete it working together?
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Answer: D. 10 days
Together per day = 1/15 + 1/30 = 1/10. So they need 10 days.
Q25. A truck covers 153 km in 3 hours. What is its average speed?
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Answer: A. 51 km/h
Speed = 153/3 = 51 km/h.