If the perimeter of a square is 64 cm, what is its area? A. 256 B. 144 C. 196 D. 225 Explanation: Side = 16 ⇒ area = 256.
If a train travels 90 km in 1.5 hours, what is its speed? A. 50 km/h B. 55 km/h C. 60 km/h D. 65 km/h Explanation: Speed = 90/1.5 = 60.
If the side of a cube is doubled, how many times does its volume increase? A. 2 times B. 4 times C. 6 times D. 8 times Explanation: Volume ∝ side³ ⇒ 2³ = 8.
If a person buys an article for Rs. 400 and sells it for Rs. 500, what is the gain percent? A. 20% B. 22% C. 25% D. 30% Explanation: Profit = 100 ⇒ 25%.
If the difference between two numbers is 20 and their sum is 80, what is the larger number? A. 40 B. 50 C. 60 D. 70 Explanation: Solve system ⇒ larger = 50.
If a number is increased by 10% and becomes 220, what was the original number? A. 180 B. 190 C. 200 D. 210 Explanation: 110% = 220 ⇒ original = 200.
If the selling price of an article is Rs. 840 after 20% discount, what is the marked price? A. Rs. 900 B. Rs. 1000 C. Rs. 1050 D. Rs. 1100 Explanation: 80% = 840 ⇒ MP = 1050.
If 6 men can do a work in 12 days, how many days will 4 men take? A. 16 B. 18 C. 20 D. 24 Explanation: Work = 72 ⇒ 72/4 = 18 days.
If a number is divided in the ratio 2:3, what fraction does the smaller part represent? A. 2/5 B. 3/5 C. 1/2 D. 1/3 Explanation: Smaller part = 2/(2+3).
If a man saves 15% of his income and spends Rs. 17000, what is his total income? A. Rs. 18000 B. Rs. 20000 C. Rs. 22000 D. Rs. 25000 Explanation: 85% = 17000 ⇒ total = 20000.