Question
At present, Naveen is six years younger than Mohit.
Mohit’s age fifteen years hence will be equal to thrice that of Naveen three years ago. What will be the sum of their present age?Solution
Mohit = x Naveen = (x-6) 15 years hence, Mohit’s age = (x + 15) years 3 years ago, Naveen = x - 6 - 3 = (x - 9) years Now, (x+15) = 3 (x-9) x + 15 = 3x - 27 42 = 2x x = 21 years Hence, Mohit = 21 years Naveen = 21 - 6 = 15 years Sum of the present ages of Mohit and Naveen = 21 + 15 = 36 years
Which one of the given mathematical operations will result in 429?
Select the correct combination of mathematical signs to replace the '@' signs and balance the given equation.
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24 and 15
I. 113 + 24 - 17 X 1...
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...Select the correct combination of mathematical signs that can sequentially replace the sign * and make the equation correct.
5 * 14 * 6 * 8 * 9 * 502
- Which two signs should be interchanged to correct the given equation?
5 + 3 × 8 – 12 ÷ 4 = 3 - If '+' means '-', ' X ' means '+', '-' means '÷' and '÷' means ' X ', then what is the value of the following expression?
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