The sale price of a trolley bag including the sale tax is Rs. 420. The rate of sale tax is 12% . If the shopkeeper has made a profit of 25%, the cost price of the trolley bag is: Choose the correct option
A) Rs 625  B) Rs 300  C) Rs 350  D) Rs 375  E) None of these
Explanation :   112% of S.P. = 420   S.P. = Rs.(420x 100/112) = Rs.375.   C.P. = Rs (100/125x 375) = Rs 300   Answer : Rs 300
<result>B</result>
The sale price of a trolley bag including the sale tax is Rs. 420. The rate of sale tax is 12% . If the shopkeeper has made a profit of 25%, the cost price of the trolley bag is: