Ravish sold his motorcycle to Vineet at a loss of 28%. Vineet spent Rs 1680 on its repairs and sold the motor cycle to Rahul for Rs 35910, thereby making a profit of 12.5%, find the cost price of the motor cycle for Ravish.

Explanation

To find the cost price of the motorcycle for Ravish, we can follow these steps:

### Step 1: Understand the Selling Price and Profit/Loss
Ravish sold the motorcycle to Vineet at a loss of 28%. This means that the selling price (SP) for Ravish is 72% of his cost price (CP).

Let the cost price of the motorcycle for Ravish be \( CP_R \).

Thus, we can write:
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