A began business with Rs.27000 and was joined afterwards by B with Rs.36000. When did B join if the profits at the end of the year were divided in the ratio of 2:1?
Answers:
A) 1.5
B) 6.5
C) 7.5
D) 8
E) 2

Rationale: "27 * 12 : 36 * x = 2 : 1 x = 4.5 12 - 4.5 = 7.5 answer : c"
Answer: C