Question

find a:b if (3a+b):(a+b)=9:5.

Answer 1

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

5(3a+b)= 9(a+b)
15a+5b=9a+9b
15a-9a =9b-5b
6a = 4b
a/b=4/6
a/b = 2/3
therefore
a:b= 2:3

Answer 2

Answer:

2:3 is the correct answer........... plz mark me as a brain list and thanks me