A) 32%
B) 30%
C) 40%
D) 35%
Correct Answer: B
$ \therefore $ Overall discount percentage $ =( r _1+r _2+\frac{r _1r _2}{100} )% $ $ r _1=-10 $ and $ r _2=-15 $ [ $ - $ ve because discounts are given] $ =( 10-15+\frac{150}{100} )%=(-25+1.5)%=-23.5% $ Overall discount on table = 23.5% of 200 $ =\frac{23.5}{100}\times 200=Rs\text{. 47} $ Now, cost price of table $ =200-47=153 $ Now, he spends Rs. 7 on transportation.
$ \therefore $ Total cost price of table $ =153+7=Rs\text{. 160} $ Now, given selling price of table = Rs. 208 Gain percentage $ =( \frac{SP-CP}{CP} )\times 100% $ $ =\frac{208-160}{160}\times 100%=\frac{48}{160}\times 100%=30% $
$ \therefore $ Profit percentage of shopkeeper $ =30% $