SSC Quantitative Aptitude 1

Question 1

A train travels 360 km in 4 hours. What is its speed in meters per second?

Accepted Answer

25 m/s

Answer

Speed = 360 km/4 h = 90 km/h = 90 × (1000/3600) = 25 m/s.

Question 2

What is 15% of 240?

Accepted Answer

36

Answer

15% of 240 = (15/100) × 240 = 36.

Question 3

A shopkeeper marks his goods 20% above cost price and offers 10% discount. What is his profit percentage?

Accepted Answer

8%

Answer

If CP=100, MP=120, SP=120×0.9=108, so profit = 8%.

Question 4

Find the LCM of 12, 15, and 20.

Accepted Answer

60

Answer

LCM(12,15,20): 12=2²×3, 15=3×5, 20=2²×5; LCM=2²×3×5=60.

Question 5

If the simple interest on Rs. 2000 at 5% per annum for 3 years is Rs. 300, what would be the compound interest?

Accepted Answer

Rs. 315.25

Answer

CI = 2000[(1+0.05)³ − 1] = 2000[1.157625−1] = 2000×0.157625 = Rs. 315.25.

SSC Practice Test