Puzzle 132 - Triple the value

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To the fraction 1/3, if you add 3 to both its numerator and denominator, its value doubles - it becomes 4/6 = 2/3.




Find a fraction whose value triples when you add its denominator to both numerator and denominator. 

Find also the fraction whose value quadruples when you add the denominator to its numerator and denominator.


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