A) 2 : 1
B) 14 : 3
C) 7 : 2
D) 1 : 2
Correct Answer: A
Solution :
\[\frac{a}{3}=\frac{b}{4}=\frac{c}{7}=k\] \[\Rightarrow \] \[a=3k,\] \[b=4k\] and \[c=7k\] \[\Rightarrow \] \[\frac{a+b+c}{c}=\frac{3k+4k+7k}{7k}=\frac{14k}{7k}=2:1\]You need to login to perform this action.
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