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 .
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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
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
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