Quantitative Apitude-Arithmetic Questions and Answers
Practice ModeShowing 10 of 25 questions
Q21
A shirt marked at ₹200 is sold with 15% discount. What is the selling price?
Answer: Option C
Explanation: Discount = 15% of 200 = 30. Selling price = 200 − 30 = 170.
Q22
For ₹1000 at 10% per annum, what is the difference between compound interest and simple interest for 2 years?
Answer: Option B
Explanation: Difference = CI − SI = P[(1+r)^2 − (1 + 2r)] = P(r^2) = 1000×0.1^2 = 10.
Q23
The product of two consecutive integers is 56. Which are they?
Answer: Option B
Explanation: n(n+1)=56 ⇒ n^2+n−56=0 ⇒ n=7 ⇒ integers 7 and 8.
Q24
A number is increased by 20% and then decreased by 20%. What is the net change?
Answer: Option B
Explanation: Net factor = 1.2×0.8 = 0.96 ⇒ net decrease = 4%.
Q25
What is the LCM of 8, 10 and 12?
Answer: Option B
Explanation: LCM: 8=2^3, 10=2×5, 12=2^2×3 ⇒ LCM = 2^3×3×5 = 120.