Question
The length of a rectangle is extended by 26%, while its
width is reduced by 26%. What is the percentage change in the area of the rectangle as a result of these adjustments?Solution
Let length and breadth of rectangle initially be x cm and y cm respectively. Area of rectangle = xy cm2 Length after increase = 1.26x cm Breadth after decrease = 0.74y cm Area of rectangle now = 1.26x × 0.74y = 0.9324xy cm2 Decrease in area = xy – 0.9324xy = 0.0676xy cm2 Percentage decrease = 0.0676xy/xy × 100 = 6.76% Hence, option e.
A series is given with two wrong terms. Select the wrong term in the given series.
32, 43, 58, 73, 92, 117, 144
3. 8, 15, 24, 34, 48, 63
Find the wrong number in the given series.
5, 3, 6, 17.25, 64.75
Identify the letter-cluster that does not belong to the following series.
RBK, TYM, VVO, XSP, ZPS, BMU
In the following question, select the wrong number from the given alternatives.
8, 10, 16, 32, 48, 78, 120
In the following question, select the wrong number from the given alternatives.
52, 26, 26, 52, 208, 1644
Select the wrong term in the series.
10, 19, 23, 52, 61, 133, 149
Select the number from among the given options that is wrong in the following series.
22, 30, 46, 78, 146, 270
Find the wrong number in the series given below.
6, 19, 59, 182, 544, 1637
In the following question, select the wrong number from the given alternatives.
32, 16, 16, 24, 48, 126, 360
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