A started a business by investing Rs 42000 After few months B joined by investing Rs 49 000 If at th...........

Quantitative Aptitude ( CCS) Partnership

A started a business by investing Rs. 42000. After few months B joined by investing Rs. 49,000. If at the end of Year A got Rs. 9000 and B got Rs. 7,000 as a share of their profit. Then after how many months. A joined the business.

1 month

4 months

2 months

3 months

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Explanation:

Capital invested by A = Rs. 42,000
Capital invested by A = Rs. 49,000
Ratio of profits of B and A = 900 : 700 = 9 : 7
we know,
42,000 × 12/49,000 × T2 = 9/7
T2 = 8 months
It means B invested his capital for 8 months.
It means he joined business after (12-8 = 4) months