ATQ, Let the son's present age = x, and the father's present age = y. 14 years ago: Father = 3 × Son = y−14 = 3(x−14) ⟹ y = 3x−28 Now: Father = 2 × Son = y = 2x On Solving we get: From y=2x and y=3x−28: 2x=3x−28⟹x=28 y=2x=56. Sum of ages = x + y = 28+56 = 84 years
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
28 * 174 * 6 * 4 * 126 = 18
Which one of the given mathematical operations will result in 429?
If '@' means ' X ', '$' means '-', '#' means '÷', and '%' means '+', then what is the value of the expression: [75 % {(169 $ 15) # 11} @ 8]
If + means ÷, × means –, – means × & ÷ means +, then 32 + 16 – 13 x 18 ÷ 2 = ?
Select the correct combination of mathematical signs that can sequentially replace the * signs and balance the given equation.
128 * 4 * 12 * 3 * 8 = 20
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 expression ' 100 - 10 + 30 × 5 ÷ 2 × 10' ?
...If ‘ × ’ means ‘ + ’. ‘+’ means ‘÷’, ‘-’ means ‘×’ and ‘÷’ means ‘-’, then 9 × 8 – 5 + 40 ÷ 3 = (?)
...If ‘P’ means ‘+’, V means ‘×’, T means ‘-‘ and ‘Q’ means “÷’ , then find the value of the expression given below:
30 P ...
What will be the value of expression if the signs ‘(-)’ and ‘(+)’ are interchanged?
75 + 42 – 6 × 56 ÷ 7 + 6 × 3 – 2
...
