When the numerator of a frction increases by 4, the fraction increases by 2/3. The denominator of the fraction is :
A
2
B
3
C
4
D
6
Correct Answer: 6
Hints: ধরি, function টি x/y, তাহলে (x + y) /y - x/y = 2/3 4/y = 2/3 y = (4 × 2) /2 = 6