Correct Answer - Option 4 : 17 : 16
A’s capital = B’s capital + 1/3rd of B’s capital = 4/3 × B’s capital
Time period of A for 100% capital = 5 months and remaining 50% = 7 months, (50% withdrew)
Time period of B for 100% capital = 8 months and remaining 66.66% = 4 months, (1/3rd withdrew)
Concept used:
Ratio of product of time and investment = Ratio of profit
Calculation:
Let B’s capital be X, then A’s capital = X + 1/3 × X = 4/3 × X = 4X/3
Investment of A for 1 year = 4X/3 for 5 months + (4X/3 – 50% of 4X/3) for 7 months = 4X/3 × 5 + (4X/3 – 2X/3) × 7
⇒ 20X/3 + 14X/3 = 34X/3
Investment of B for 1 year = X for 8 months + (X – 1/3 × X) for 4 months = 8X + 2X/3 × 4
⇒ 8X + 8X/3 = 32X/3
Ratio of profit = 34X/3 ∶ 32X/3 = 34 ∶ 32 = 17 ∶ 16
∴ Ratio of profit would be 17 ∶ 16.