Question : If $2A = 3B = 5C$, what is $A:B:C$?
Option 1: $2:3:5$
Option 2: $5:3:2$
Option 3: $6:10:15$
Option 4: $15:10:6$
Correct Answer: $15:10:6$
Solution : $2A=3B$ and $3B=5C$ $A= \frac{3B}{2}$ and $ C=\frac{3B}{5}$ $\therefore A:B:C = \frac{3B}{2} : B : \frac{3B}{5}$ $= 15:10:6$ Hence, the correct answer is $15:10:6$
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