While selling a watch a shopkeeper gives a discount of `5%` . If he given a discount of `7%`, he earns Rs. 15 less as profit. What is the marked price of the watch ?

Options

A. Rs. `697.50`
B. Rs. `712.50`
C. Rs. `787.50`
D. None of these

Answer

To solve the problem step-by-step, we will first define the variables and then use the information provided to find the marked price of the watch.

### Step 1: Define the Variables
Let the marked price of the watch be \( M \).