Quantitative Aptitude-Area
Quantitative Aptitude-Area
61. A rectangular plot measuring 90 metres by 50 metres is to be enclosed by wire fencing. If the poles of the fence are kept 5 metres apart, how many poles will be needed?
- 55
- 56
- 57
- 58
62. The length of a rectangle is twice its breadth. If its length is decreased by 5 cm and breadth is increased by 5 cm, the area of the rectangle is increased by 75 sq.cm. Find the length of the rectangle?
- 10 cm
- 20 cm
- 30 cm
- 40 cm
63. A room 5m 55cm long and 3m 74cm broad is to be paved with square tiles.Find the least number of square tiles required to cover the floor?
- 176
- 175
- 185
- 188
64. The base of a parallelogram is twice its height. If the area of the parallelogram is 72 sq.cm. Find its height?
- 3 cm
- 6 cm
- 7 cm
- 9 cm
65. The perimeter of a rhombus are 24 cm and 10 cm, the area and the perimeter of the rhombus is
- 64 sq.m
- 70 sq.m
- 78 sq.m
- 84 sq.m
66. There are two sections A and B of a class, consisting of 36 and 44 students respectively. If the average weight of sections A is 40 kg and that of section b is 35 kg. Find the average weight of the whole class?
- 36.25
- 37.25
- 38.35
- 39.25
67. A batsman makes a score of 87 runs in the 17th inning and thus increases his averages by 3.Find his average after 17th inning?
- 19
- 29
- 39
- 49
68. A students was asked to find the arithmetic mean of the numbers 3, 11, 7, 9, 15, 13, 8, 19, 17, 21, 14 and x. He found the mean to be 12. What should be the number in place of x?
- 3
- 7
- 17
- 31
69. David obtained 76, 65, 82, 67 and 85 marks (out in 100) in English, Mathematics, Physics, Chemistry and Biology.What are his average marks?
- 65
- 69
- 72
- 75
70. The average of 20 numbers is zero. Of them, at the most, how many may be greater than zero?
- 0
- 1
- 10
- 19