A) 9 : 12 : 16
B) 20 : 12 : 15
C) 15 : 10 : 9
D) 8 : 5 : 3
Correct Answer: A
Solution :
x = 5y = 4z LCM of 3, 5 and 4 = 60 \[\therefore \]\[\frac{3x}{60}=\frac{5y}{60}=\frac{4z}{60}\]\[\Rightarrow \]\[\frac{x}{20}=\frac{y}{20}=\frac{z}{15}\] \[\therefore \]\[x:y:z=20:12:15\]
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