A began business with 12500 and is joined afterwards by B with 50000. When did B join, if the profits at the end of the year are divided equally?
Choose the most appropriate option:
A) 3 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 × 12500 : (12 – x) × 50000   or 12 : 4(12 – x)   Since profit is equally divided so   12 = 4(12 – x) or x = 3. Thus B joined after 8 months.   3 monthsnswer 3 months
<result>A</result>
A began business with 12500 and is joined afterwards by B with 50000. When did B join, if the profits at the end of the year are divided equally?