A fraction becomes 4/5 when 1 is added to both the numerator and denominator. However, if 5 is subtracted from each, it becomes 1/2. What is the fraction?
Q1. A fraction becomes 4/5 when 1 is added to both the numerator and denominator. However, if 5 is subtracted from each, it becomes 1/2. What is the fraction?
Answer: 07-Sep
Explanation: Let the fraction be n/d; (n+1)/(d+1) = 4/5 and (n−5)/(d−5) = 1/2; solving simultaneously gives n = 7 and d = 9, so the fraction is 7/9.