A shopkeeper earns 10 on an investment but loses 20 on...

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A shopkeeper earns 10% on an investment but loses 20% on another investment. If the ratio of the two investments is 2 : 3, then the combined loss percentage is:

A. 5.5%

B. 7%

C. 6%

D. 8%

Answer: Option D

Solution(By Examveda Team)

Investments = 200 : 300
\[\begin{array}{*{20}{c}} {200}&:&{300} \\ {\,\,\,\,\,\,\,\,\,\, \downarrow + 10\% }&{}&{\,\,\,\,\,\,\,\,\,\, \downarrow - 20\% } \\ {220}&{}&{240} \end{array}\]
Investments = 500
After increase/decrease = 460
Loss = 40
Loss % = $$\frac{{40}}{{500}}$$ × 100 = 8%

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