A began business with 6000 and is joined afterwards by B with 24000. When did B join, if the profits at the end of the year are divided equally?	Choose the correct choice from the following options.
A) 8 months
B) 9 months
C) 10 months
D) 7 months
E) None of these
Let B join after x months of the start of the business so that B’s money is invested for (12 – x) months.   ∴ Profit ratio is 12 × 6000 : (12 – x) × 24000   or 12 : 4(12 – x)   Since profit is equally divided so   12 = 4(12 – x) or x = 9. Thus B joined after 9 months.   Answer 9 months
<result>B</result>
A began business with 6000 and is joined afterwards by B with 24000. When did B join, if the profits at the end of the year are divided equally?