Quantitative Apitude-Arithmetic Questions and Answers
Practice ModeShowing 10 of 25 questions
Q1
What is 25% of 240?
Answer: Option B
Explanation: 25% of 240 = 240 × 0.25 = 60.
Q2
If 15% of a number is 30, what is the number?
Answer: Option C
Explanation: Let x be the number: 0.15x = 30 ⇒ x = 30/0.15 = 200.
Q3
What is the LCM of 12 and 18?
Answer: Option C
Explanation: Prime factors: 12 = 2^2×3, 18 = 2×3^2 ⇒ LCM = 2^2×3^2 = 36.
Q4
What is the GCD (HCF) of 48 and 18?
Answer: Option B
Explanation: Prime factors: 48 = 2^4×3, 18 = 2×3^2 ⇒ GCD = 2×3 = 6.
Q5
A shopkeeper buys an item for ₹500 and sells it for ₹575. What is the profit percent?
Answer: Option C
Explanation: Profit = 575−500 = 75. Profit% = (75/500)×100 = 15%.
Q6
Find the simple interest on ₹2000 for 2 years at 5% p.a.
Answer: Option B
Explanation: SI = P×R×T /100 = 2000×5×2/100 = 200.
Q7
Find the compound interest (annual) on ₹1000 for 2 years at 10% p.a. (nearest integer).
Answer: Option C
Explanation: Amount = 1000×(1.1)^2 = 1210 ⇒ CI = 1210 − 1000 = 210.
Q8
The average of five numbers is 16. Four of them are 12, 15, 18 and 20. What is the fifth number?
Answer: Option B
Explanation: Total = 5×16 = 80. Sum of given four = 65. Fifth = 80 − 65 = 15.
Q9
If A:B = 3:5 and A + B = 64, what is A?
Answer: Option B
Explanation: Total parts = 3+5 = 8. A = 3/8 × 64 = 24.
Q10
A car travels 120 km in 2 hours. How long (minutes) will it take to travel 30 km at the same average speed?
Answer: Option C
Explanation: Speed = 120/2 = 60 km/h. Time = 30/60 = 0.5 h = 30 minutes.