Question
The ratio of the length to the breadth of a rectangle is
5:7. If the sum of the length and breadth of the rectangle is 60 cm, find the area (in cm²) of the rectangle.Solution
Let the length and breadth of the rectangle be 6x cm and 9x cm, respectively. According to the question, 5x + 7x = 60 Or x = 60/12 = 5 Therefore, area of the rectangle = 5 x× 7x = 35x2 =35×25 = 875 cm2
- What will come in place of (?), in the given number series.
1, 1, 2, 3, 5, ?, 13 - What will come in place of (?), in the given number series.
100, 95, 85, 70, ?, 25 864, 432, 144, ? , 7.2, 1.2
What will come in place of the question mark (?) in the following series?
15, 90, 450, ?, 5400, 10800
2, 13, 27, 44, ?, 87
98, 134, 198, ?, 442, 638
11 20 ? 64 112 192
...64, 80, 120, 210, ?, 945
What will come in place of the question mark (?) in the following series?
4, 8, 2, 12, 1.5, ?
1, 6, 27, 124, ?, 3906, 27391
...