A dealer purchased a washing machine for Rs. 6400. After allowing a discount of 20% on its marked price, he still gains 30%. Find the marked price of the washing machine.
Rs. 10,400
Step 1: Form the equation:
\(SP=6400(1.30)=8320\)
Step 2: Calculate the required result:
\(MP=\frac{SP}{0.80}=\frac{8320}{0.80}=10400\)