If 12 : x :: x : 27 and 25 : y :: y : 36, where x and y are both positive numbers, then find x : y.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e 3 : 5.
12 : x :: x : 27 → x² = 12 × 27 = 324 → x = 18
25 : y :: y : 36 → y² = 25 × 36 = 900 → y = 30
x : y = 18 : 30 = 3 : 5