Question
A girl’s age is 125% of what it was 5 years ago, but
75% of what it will be after 5 years. What is her present age?Solution
Let the girl's present age be 'x' years. According to question, => 1.25 × (x-5) = 0.75 × (x+5) => 1.25x – 6.25 = 0.75x + 3.75 => 0.5x = 10 => x = 20 years
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612, 487,?, 396, 388, 387
Find the missing number in the given number series.
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What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
44   45    41   50    ?      59    23
...221, 100, 0, -81, ?
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37, 57, 82, ?, 147, 187
