Average (SSC) (Part-3)

Total Questions: 50

31. The average age of all the students in a class is 18 years. The average age of the boys of the class is 19 years and of the girls is 14 years. If the number of girls in the class is 30, then what is the number of boys in the class? [Matriculation Level 20/06/2024 (Shift-4)]

Correct Answer: (b) 120
Solution:

32. The average of v numbers is w² and that of w numbers is v² Then the average of all the numbers is: [Matriculation Level 20/06/2024 (Shift-4)]

Correct Answer: (c) vw
Solution:

33. At a fitness club, 70% of the members are men and 30% of the members are women. If the average age of the men is 30 years and that of the women is 40 years, then what is the average age of all the members? [Matriculation Level 21/06/2024 (Shift-1)]

Correct Answer: (b) 33 years
Solution:

34. The average of runs of a cricket player in 12 innings was 42. How many runs must he make in his next innings to increase his average of runs by 2? [Matriculation Level 21/06/2024 (Shift-4)]

Correct Answer: (b) 68
Solution:

35. The average weight of 4 persons is increased by 14 kg when one of them whose weight is 55 kg, is replaced by another person. What is the weight (in kg) of the new person? [Matriculation Level 24/06/2024 (Shift-1)]

Correct Answer: (a) 111
Solution:

36. A packet has to consist of three types of jellies orange, mango and strawberry. The price per unit of orange, mango and strawberry jelly is ₹2.00, ₹3.00 and ₹3.50, respectively. In a packet, there are 80 orange jellies, 50 mango jellies and 120 strawberry jellies. What is the average cost (in ₹) of a jelly in a mixed packet? [Matriculation Level 24/06/2024 (Shift-4)]

Correct Answer: (c) 2.92
Solution:

37. The average cost of a pencil is ₹8 and the average cost of an eraser is ₹4. The cost of 8 erasers, 4 pencils and 12 sharpeners are ₹148. The average cost of a sharpener is ₹ ______ . [Matriculation Level 24/06/2024 (Shift-4)]

Correct Answer: (c) 7
Solution:

38. In nine games, A wins five games with score differences of 12, 3, 8, 4 and 1, while in the remaining four games, he loses with score differences of -4, -1, -2 and -3. The average score difference of A in all the nine games is: [Matriculation Level 26/06/2024 (Shift-1)]

Correct Answer: (a) 2
Solution:

39. The average temperature of a city for the first four days of the week is 25°C, and the average temperature for the last four days is 30°C. If the average temperature for the entire week is 27°C, then what is the temperature on the fourth day? [Higher Secondary 24/06/2024 (Shift-2)]

Correct Answer: (b) 31°C
Solution:

40. The average weight of 5 boys is increased by 9 kg when one of them, whose weight is 39 kg, is replaced by another boy. What is the weight (in kg) of the new boy? [Higher Secondary 24/06/2024 (Shift-2)]

Correct Answer: (d) 84
Solution: