A) 1 : 2
B) \[1:3\]
C) \[2:1\]
D) \[3:1\]
Correct Answer: B
Solution :
Let x litres of first mixture is mixed with y letres of the second mixture. According to the question, \[\frac{x\times \frac{30}{100}+y\times \frac{50}{100}}{x\times \frac{70}{100}+y\times \frac{50}{100}}=\frac{45}{55}\] \[\Rightarrow \] \[\frac{0.3x+0.5y}{0.7x+0.5y}=\frac{9}{11}\] \[\Rightarrow \] \[6.3x+4.5y=3.3x+5.5y\] \[\Rightarrow \] \[6.3x-3.3x=5.5y-4.5y\] \[\Rightarrow \] \[3x=y\] \[\therefore \] \[\frac{x}{y}=1:3\]You need to login to perform this action.
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