1 .
If the numerator of a certain fraction is increased by 100% and the denominator is increased by 200% the new fraction thus formed is $4\over21$ . What is the original fraction?
[ A ]    $2\over7$ right
[ B ]    $3\over7$
[ C ]    $2\over5$
[ D ]    $4\over7$
[ E ]    none of these
Answer : Option A
Explanation :
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