Sony – Aptitude Questions & Answers for Placement Tests

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Q.1 22.5 × 18.6 – 3.7 × 15.5 = ? + 198.85

Check Solution

Ans: B

22.5 × 18.6 = 418.5; 3.7 × 15.5 = 57.35; 418.5 – 57.35 = 361.15; 361.15 – 198.85 = 162.3. Nearest value is 165.2

Q.2 What is the missing number in the sequence: 2, 6, 12, 20, ?, 42

Check Solution

Ans: B

The sequence follows the pattern: 1*2, 2*3, 3*4, 4*5, 5*6, 6*7. The missing number is 5*6 = 30.

Q.3 A grocer mixes 40 kg of rice at Rs. 60 per kg and 60 kg of rice at Rs. 70 per kg. He then sells the mixture at a profit of 25%. What is the selling price per kg of the mixture?

Check Solution

Ans: C

Total cost price = (40 * 60) + (60 * 70) = 2400 + 4200 = Rs. 6600. Total weight = 40 + 60 = 100 kg. Cost price per kg = 6600/100 = Rs. 66. Selling price with 25% profit = 66 * 1.25 = Rs. 82.5.

Q.4 The side of a square is 14cm. The breadth of a rectangle is half the side of the square and the length of the rectangle is twice its breadth. What is the area of the rectangle? (in sq. cm)

Check Solution

Ans: A

Breadth of rectangle = 14/2 = 7 cm. Length of rectangle = 2 * 7 = 14 cm. Area of rectangle = 14 * 7 = 98 sq. cm.

Q.5 A fruit vendor bought 120 apples and 80 oranges for Rs. 4,800/-. He sold them to make an overall profit of 25%. At what total price should he sell 90 apples and 60 oranges together to make the same percentage profit?

Check Solution

Ans: B

Cost price of 120 apples and 80 oranges = Rs. 4,800. Selling price to gain 25% profit = 4800 * 1.25 = Rs. 6,000. Since the ratio of apples and oranges sold to bought is 3/4, the total selling price should be (3/4) * 6000 = Rs. 4,500.

Q.6 Rohan lent some money to Sohan at simple interest of 10% per annum for three years. Sohan lent the entire amount he received back to Mohit at compound interest of 10% per annum for two years. If Mohit paid Rs. 13,200 to Sohan finally, then find the amount lent by Rohan to Sohan.

Check Solution

Ans: B

Let the amount lent by Rohan be P. Amount received by Sohan after 3 years = P + (P*10*3)/100 = 1.3P. Amount received by Mohit after 2 years = 1.3P * (1 + 10/100)^2 = 1.3P * 1.21 = 1.573P. Thus, 1.573P = 13200. Therefore P = 13200/1.573 = 10000.

Q.7 The average age of 25 students in a class is 14 years. Five new students, each 15 years old, join the class. What is the new average age of the class?

Check Solution

Ans: A

Total age of 25 students = 25 * 14 = 350 years. Total age of 5 new students = 5 * 15 = 75 years. New total age = 350 + 75 = 425 years. New total students = 25 + 5 = 30. New average age = 425 / 30 = 14.1666…

Q.8 The ratio of apples and oranges in a basket is 4:5 respectively. The average number of apples and oranges is 45. What is the difference between the number of oranges and apples in the basket?

Check Solution

Ans: A

Let the number of apples be 4x and oranges be 5x. The average is (4x + 5x)/2 = 45. Therefore, 9x/2 = 45 which gives x = 10. Hence, the number of apples is 4*10=40 and oranges is 5*10=50. The difference is 50-40=10

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