Maths MCQs for AD (ASF)

Q51. A man buys a watch for Rs 1400 and sells it for Rs 1120. His loss percentage is

• A) 15%
• B) 18%
• C) 20%
• D) None of these

Q52. Average of 8 numbers is 25. Two numbers 20 and 30 are removed. New average is

• A) 24
• B) 25
• C) 26
• D) None of these

Q53. A batsman scored 36, 54, 27, 81, 42 and 60 in six innings. His average score is

• A) 48
• B) 50
• C) 52
• D) None of these

Q54. In a container of 40 litres milk, 8 litres are removed and replaced with water twice. Milk remaining is

• A) 25.6 litres
• B) 26.4 litres
• C) 28 litres
• D) None of these

Q55. Pipe A fills a tank in 6 hours and Pipe B fills it in 12 hours. Together they fill the tank in

• A) 3 hours
• B) 4 hours
• C) 5 hours
• D) None of these

Q56. A car covers 240 km at 60 km/h and returns at 80 km/h. Average speed for whole journey is

• A) 68.57 km/h
• B) 70 km/h
• C) 72 km/h
• D) None of these

Q57. Area of a circle is 154 cm². Its circumference is

• A) 44 cm
• B) 42 cm
• C) 48 cm
• D) None of these

Q58. A room is 8m long, 5m wide and 4m high. Area of four walls is

• A) 96 m²
• B) 100 m²
• C) 104 m²
• D) None of these

Q59. Compound interest on Rs 5000 at 10% per annum for 2 years is

• A) Rs 1000
• B) Rs 1050
• C) Rs 1100
• D) None of these

Q60. A sum becomes Rs 8820 in 2 years at 5% compound interest. The principal amount is

• A) Rs 7500
• B) Rs 7800
• C) Rs 8000
• D) None of these