A , B and C enter into partnership by making investments in the ratio 3:5:7 . after a year , C invests another tk.337600 while a withdraws tk. 45600, the ratio of investments then changes to 24:59:87 . How much does a invest initially ?

Correct Answer: tk.131600
ধরি, A এর initial investment 3x B এর inital investment 5x C এর inital investment 7x ( 3x : 45600) : 5x = 24 : 59 3x - 45600/5x = 24/59 x - 15200 /5x = 8/59 59x - 40x = 15200 × 59 x = 15200 × 54 /19 x = 47,200 A এর initial investment ( 3 × 47200) = 1,41,600