In a partnership business the monthly investment by three friends for the first six months is in the ratio 3 : 4 : 5. After six months, they had to increase their monthly investments by 10% , 15% and 20% respectively, of their initial monthly investment. the new investment ratio was kept constant for next six months.What is the ratio of their shares in the total profit (in the same order) at the end of the year such that the share is proportional to their individual total investment over the year?

Previously Asked in : Gate CE-afternoon season 2022 ||

22 : 23 : 24

63 : 86 : 110

22 : 33 : 50

33 : 46 : 60

Answer (Detailed Solution Below)

Option 63 : 86 : 110 is correct

Detailed Solution :

Let capitals invested by three friends for 6months are

C_1\, = \,3x \, ; C_2\, = \,4x \, ; \, C_3 \, = \, 5x \\ P_1 : \, P_2 : \, P_3 \, = I_1 : I_2 : I_3

( notation : C- cost , P – profit and I-Investment )

\therefore P_1 : P_2 : P_3 = \\\ : \,\left (3x \times 6 \, 1.1 \times 3x \times 6 \right) \\\ : \, \left (4x \times 6 \, + \, 1.15 \times 4x \times 6\right) \\\ : \, \left (5x \times 6 \, + \, 1.2 \times 5x \times 6 \right)

= 6.3 \, : \, 8.6 \, : \, 11 \\\ = 63 : 86 : 110

Correct option is: 63 : 86 : 110

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