The ratio of r to s is 3 to 4. The ratio of s to t is 2 to 9. What is the ratio of r to t ?
A. 1 to 3
B. 1 to 6
C. 2 to 9
D. 3 to 10
E. 4 to 5
সঠিক উত্তরঃ
B.
1 to 6
Explanation:
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