| A man sold two watches for Rs. 240 each. On one he gains 20% and incurs a loss of 20% on another. What is his gain or loss per cent in this transaction? |
A) 1% profit
B) 4% loss
C) 3% loss
D) 4% profit
Correct Answer: B
Solution :
| Total SP \[=240+240=480\] |
| Then, CP of first watch \[=\frac{240\times 100}{120}=200\] |
| and CP of second watch \[=\frac{240\times 100}{80}=300\] |
| Total\[\text{CP}=200+300=500\] |
| Loss \[=\text{CP}-\text{SP}=500-480=20\] |
| \[\therefore \] Loss% = \[\frac{20}{500}\times \,100\]= 4% |
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