Question
The length of a rectangle is 3 metres more than its
width. If the perimeter of the rectangle is 50 metres then what is the area (in m2 ) of the rectangle?Solution
Let the width of the rectangle = ‘x’ metres Then, length of the rectangle = (x + 3) metres Perimeter of the rectangle = 2 × (length + width) Or, 2 × (x + x + 3) = 50 Or, 2x + 2x + 6 = 50 Or, 4x = 50 – 6 = 44 Or, x = 44/4 = 11 m So, area of the rectangle = x × (x + 3) = 11 × 14 = 154 m2
If 'A' means ' X ', 'B' means '÷', 'C' means '+' and 'D' means ' - ', then what will come in the place of '?' in the given expression?
144 B ...
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8 A 16 B 4 C 14...
If ‘+’ means ‘–’, ‘–’ means ‘×’, ‘×’ means ‘÷’, ‘÷’ means ‘+’, then what will come in place of the question mark...
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24 @ 20 & 2 % 3 # ...
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
128 * 4 * 12 * 3 * 8 = 20
How many meaningful four-letter words can be formed using the 1st, 3rd, 7th, and 8th letters of the word 'PERIPHERAL'?
Which of the following “signs” are placed in place of “symbols” given in the equation to make the equation true?
36 $ 12 % 6 + 8 – 9 @ ...
If ‘@’ means ‘+’, ‘#’ means ‘-’, ‘$’ means ‘×’ and ‘%’ means ‘÷’, then what is the value of the following expression?<...
Which among the given operators should replace the “%” (in the same order) in the given expression below:
5 % 10 % 5 % 36 % 15 % 6
