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Railways PYQCBT 1 2016

RRB NTPC · Question 2

Mohan invested Rs. 100,000 in a garment business. After few months, Sohan joined him with Rs. 40000. At the end of the year, the total profit was divided between them in ratio 3 : 1. After how many months did Sohan join the business?

  1. 3

  2. 2

  3. 4

  4. 5

Show answer & explanation

Answer: (B) 2

Explanation

Profit is shared in the ratio of capital × time. Mohan: 1,00,000 × 12. Sohan joined after x months: 40,000 × (12 − x). So 12,00,000 : 40,000(12 − x) = 3 : 1, which gives 40,000(12 − x) = 4,00,000, i.e. 12 − x = 10 and x = 2. Sohan joined after 2 months.