Correct Answer - Option 4 : 13/10
Given
Numerator is decreased by 10%
Denominator is increased by 22%
Calculation
Let the original fraction is x/y
According to question
[x - 10% of x]/[y + 22% of y] = 117/122
⇒ (90x/100)/(122y/100) = 117/122
⇒ 90x/122y = 117/122
⇒ x/y = (117 × 122)/(122 × 90)
⇒ x/y = 13/10
∴ Original fraction is 13/10