(A) 2 : 3
(B) 4 : 3
(C) 6 : 7
(D) 9 : 16
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(A) 2 : 3
(B) 4 : 3
(C) 6 : 7
(D) 9 : 16
Answer: Option (B) 4 : 3
Explanation:
Let us name the trains as A and B. Then,
(A’s speed) : (B’s speed) = √b : √a = √16 : √9 = 4 : 3