Question

Options
A 3:4:7
B 7:9:12
C 7:10:15
D 8:3:5

Answer 1

8:3:5 is the right answer

Answer 2

answer is c
because
A:B:C = 4:3:5
Let ratio be x
then A= 4x
B=3x
C=5x
A+B=4x+3x=7x
B+C=3x+5x=8x
C+A=5x+4x=9x

A+B/C : B+C/A : C+A/B = 7x/5x : 8x/4x : 9x/3x

By cancellation we get,

7/5 : 2 : 3
multiplying 5 on three ratio then we get,


therefore 7:10:15 is your ratio i hope this helps you