Multiple choice general knowledge math & puzzles

A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined then after six months with an amount equal to that of B. In what proportion should the profit at the end of one year be distributed among A, B and C?

  1. 6:10:3

  2. 6:7:8

  3. 6:10:5

  4. Data inadequate

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A and B invest for 12 months in ratio 3:5. C invests 5 units for 6 months. Ratio of profit = (3*12) : (5*12) : (5*6) = 36 : 60 : 30. Dividing by 6 gives 6 : 10 : 5.