Section: Mathematics

25) If y/x = 1/3 and x + 2y = 10, then x is

1. 2
2. 3
3. 4
4. 5
5. 6

Since y/x = 1/3, cross multiply to obtain x = 3y. Substitute x = 3y into x + 2y = 10 to get 3y + 2y = 5y = 10. Therefore y =2 and x = 6.