If 20% of a number is 60, what is the number? A. 200 B. 250 C. 300 D. 350 Explanation: Number = 60/0.2 = 300.
If the cost of 5 books is Rs. 250, what is the cost of 8 books? A. Rs. 300 B. Rs. 350 C. Rs. 400 D. Rs. 450 Explanation: One book = 50 ⇒ 8 = 400.
If a number is 25% more than another number, 80, what is the number? A. 90 B. 95 C. 100 D. 120 Explanation: 25% of 80 = 20 ⇒ total = 100.
If the sum of three consecutive even numbers is 36, what is the smallest number? A. 10 B. 12 C. 14 D. 16 Explanation: Let numbers be x, x+2, x+4 ⇒ 3x+6=36 ⇒ x=10.
If 5 machines produce 100 units in 4 hours, how many units will 10 machines produce in 2 hours? A. 50 B. 100 C. 150 D. 200 Explanation: Work ∝ machines × time ⇒ same output.
If the ratio of boys to girls is 2:3 and the total number of students is 50, how many girls are there? A. 20 B. 25 C. 30 D. 35 Explanation: Total parts = 5 ⇒ girls = 3×10 = 30.
If a triangle has sides 3 cm, 4 cm, and 5 cm, what type of triangle is it? A. Equilateral B. Isosceles C. Right-angled D. Obtuse Explanation: 3² + 4² = 5².
If a number is multiplied by 4 and becomes 48, what is the number? A. 10 B. 12 C. 14 D. 16 Explanation: Number = 48/4 = 12.
If the average of 4 numbers is 25, what is their total? A. 50 B. 75 C. 100 D. 125 Explanation: Total = 25×4 = 100.
If 3 pencils cost Rs. 9, what is the cost of 10 pencils? A. Rs. 25 B. Rs. 27 C. Rs. 30 D. Rs. 33 Explanation: One pencil = Rs. 3 ⇒ 10 = Rs. 30.