A) 30%
B) 40%
C) 70%
D) 75%
Correct Answer: D
Solution :
According to the given condition, \[A\times \frac{30}{100}+B\times \frac{40}{100}=B\times \frac{80}{100}\] \[\Rightarrow \] \[A\times \frac{30}{100}=B\times \frac{80}{100}-B\times \frac{40}{100}\] \[\Rightarrow \] \[\frac{30A}{100}=B\times \frac{40}{100}\] \[\Rightarrow \] \[3A=4B\] \[\therefore \] Required per cent \[=\frac{3}{4}\times 100=75%\]You need to login to perform this action.
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