Question
A, B and C started a business with an investment of
Rs.(x+200), Rs.x and Rs.800 respectively. Before 4 months, A and C left the business. At the end of a year, the profit received by B is Rs.500 out of total profit of Rs.2500. Find the initial investment of A.Solution
 Ratio of A, B and C = (x + 200) × 8 : x × 12 : 800 × 8 => (x + 200) × 2 : 3x : 800 × 2 According to question, => 3x/(5x + 2000) = 500/2500 => 2x = 400 => x = 200 The initial investment of A = x + 200 = Rs.400
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