Question

if (a-b) : (a+b) = 1 : 11. then the ratio of (5a+4b+15) : (5a-4b+3) is.​

Answer 1

Answer:

a-b:a+b=1:11

a-b/a+b=1/11

11a-11b=a+b

10a=12b

a/b=12/10

a/b=6/5

(5a+4b+15):(5a-4b+3)

(5×6+4×5+15) :(5×6-4×5+3)

(30+20+15):(30-20+3)

65:13

5:1