Question

if we increase the numerator of a fraction by 10% and decrease the denominator by 12% then the new fraction is 15/4 , then find the cold fraction .

Answer 1

let the fraction be A/B,

then

(A×110%)/(B×88%) = 15/4,


(A×110)/(B×88) = 15/4,


(A×10)/(B×8) = 15/4,


then

A/B = 15/4 × 8/10,

A/B = 3/1 × 2/5,

A/B=6/5