Question

please solve this question with solution if the answer will correct I will add it to the brainliest answer

Answer 1

(3a+b):(a+b)=9:5

(3a+b)/(a+b)=9/5 (by applying cross section)

5(3a+b)=9(a+b)

15a+5b=9a+9b

15a-9a=9b-5b

6a=4b

a/b=4/6

a/b=2/3

that is a:b=2:3