Question

2a+b/a+4b=3 then a+b/a+2b=

Answer 1

2a+b=3(a+4b)
2a+b=3a+12b
2a-3a=12b-b

- a = 11b => a = - 11b.

(a + b)/(a + 2b) = (- 11b + b)/(- 11b + 2b).

= - 10b/- 9b = 10/9.

(a + b)/(a + 2b) = 10/9.