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Let present age of ‘B’ be ‘x’ years Present age of ‘A’ = x × 1.3 = ‘1.3x’ years ATQ; (x + 8) + 9 = (1.3x + 8) Or, x + 17 = 1.3x + 8 Or, 9 = 0.3x Or, x = 30 So, present age of ‘B’ = 30 years And, present age of ‘A’ = 30 + 9 = 39 years Required sum = 39 + 30 = 69 years
If ‘+’ means ‘-’, ‘×’ means ‘+’, ‘-’ means ‘÷’ and ‘÷’ means ‘×’, then, what is the value of the following expressio...
If ' + ' means ' × ', ' - ' means ' ÷ ', ' × ' means ' - ' and ' ÷ ' means ' + ' then 18 × 9 ÷ 3 + 8 - 4 = ?
...Select the correct combination of mathematical signs to sequentially replace the * signs and to balance the given equation.
168 * 8 * 7 * 34 * 94 = 256
What will come in place of the question mark (?) in the following equation, if '+' and '−' are interchanged and also '×' and '÷' are interchanged?...
If the following interchanges are made in signs, then what would be the value of the following expression?
48 X 63 + 2 ÷ 9 - 35
Interch...
What will be the value of expression if the numbers/digits ‘(42)’ and ‘(16)’ are interchanged?
16 - 32 ÷ 8 × 12 + 11 + 42
...Which two signs should be interchanged to make the below equation mathematically correct?
9 ÷ 3 + 6 – 6 × 2 = 30
If ‘A’ means (÷), ‘B’ means (×), ‘C’ means (+), and ‘D’ means (-), then what is the value of the expression:
28 B 3 C 30 A 6 D ...
If ‘@’ means ‘+’, ‘#’ means ‘-’, ‘$’ means ‘×’ and ‘%’ means ‘÷’, then what is the value of the following expression?...
Select the correct combination of mathematical signs to replace (#) signs and to balance the given equation.
630 # 15 # 14 # 5 # 24 # 121