A) \[d=\frac{m}{a}+\frac{n}{b}\]
B) \[am+bn=d\]
C) \[d=\frac{m}{a}+bn\]
D) \[d=am+\frac{n}{b}\]
Correct Answer: A
Solution :
[a] \[a=6,\,\,b=15\,\,\,\,\Rightarrow \,\,d=3\] \[\therefore \,\,\,3=\frac{m}{6}+\frac{n}{15}\Rightarrow \,\,m=12,n=15\]
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