Question
Perimeter of a rectangle is 60% more than that of a
square of side 20 cm. If the difference between the length and breadth of the rectangle is 10 cm, respectively, then find the length of the rectangle.Solution
ATQ, Perimeter of square = 20 X 4 = 80 cm Perimeter of rectangle = 1.60 X 80 = 128 cm Let the breadth of rectangle be 'x' cm So, length of rectangle = 'x + 10' cm ATQ, 2(x + x + 10) = 128 Or, 2x + 10 = 64 Or, 2x = 54 So, 'x' = 27 Length of rectangle = 'x + 10' = 27 + 10 = 37 cm
What will come in place of the question mark (?) in the following series?
168, 120, ?, 48, 24, 8
120, 126, 138, 162, ?, 306
In each of the following number series, one term is missing. Find the missing term.
121, 100, 81, ?, 49, 36
84, 105, ?, 168, 210, 259
480, 288, ?, 103.68, 62.208, 37.3248
42, 48, 60, 84, 132, ?
- 8, 12, 18, 27, ?
What will come in place of the question mark (?) in the following number series?
21, 42, 67, 96, ?, 166
11          20          ?             64          112        192
...14, 17, 23, 32, ?, 59
