A) 3 : 7
B) 5 : 7
C) 7 : 3
D) 7 : 5
Correct Answer: C
Solution :
Let the required ratio is x : y, then as per question? \[15x+20y=16.50(x+y)\] \[\Rightarrow \] \[=16.50x+16.50y\] \[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,3.5y=1.5x\] \[\therefore \] \[\frac{x}{y}=\frac{3.5}{1.5}\] \[=\frac{7}{3}=7:3\]You need to login to perform this action.
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