plz solve this cpt problem

For 1st ques the right answer is 47:25

In 2nd ques 5:3 is not gaining ratio it is new ratio between A & C there is mistake in study material

THANKS DHIRENDRA SIR.........

thanks a lot...

Actually both questions have some confusion,  I think question should be New Profint/Loss Ratio of A & C is 5:3 and we need to find out gaining ratio of A & C from part of B.

Answer of 1st Problem

New Ratio is 5:3 i.e.

A = 5/8 and C=3/8

And old ratio is 4:3:2 i.e.

A=4/9; B = 3/9 and C = 2/9

Now we find out gaining ratio of A & C due to retirement of B

Gaining Ratio of A  & C is  = New Ratio - Old Ratio

A's gaining ratio = 5/8 - 4/9   = (45-32)/72  = 13/72

C's Gaining ratio = 3/8-2/9 = (27-16)/72 = 11/72

i.e  13:11

So option 'a' is correct answer

Now we moveing on Second Problem

When B retire, he also get his part of goodwill i.e 10800*3/9 = Rs. 3600

Now A & C sacrifices for Rs. 3600 in gaining Ratio 13:11

So A sacrifice for Rs. 3600*13/24=Rs. 1950

and C sacrifice for Rs. 3600*11/24 =Rs. 1650

So option 'd' is correct answer

Mr. Bhoop has the correct approach