If x beakers of 100 ml containing 1 ∶ 4 acid-water solution are mixed with y beakers of 200 ml containing 3 ∶ 17 acid-water solution then the ratio of acid to water in the resulting mixture becomes 19 : 91. Find x ∶ y.
1
5 ∶ 3
2
3 ∶ 5
3
7 ∶ 13
4
13 ∶ 7