Before sale x rub - 100% During sale 4500 rub - 75% x/4500 = 100/75 x * 75 = 4500 * 100 x * 75 = 400000 x = 400000 / 75 x = 5333.33 What was the original price?

Solution:

• Let the original price be 'x' rubles, which corresponds to 100%.
• After a discount, the price became 4500 rubles, which represents 75% of the original price.
• We can set up a proportion:

  \[ \frac{x}{4500} = \frac{100}{75} \]

• Cross-multiply to solve for x:

  \[ x \cdot 75 = 4500 \cdot 100 \]

• Calculate the right side:

  \[ x \cdot 75 = 400000 \]

• Isolate x by dividing both sides by 75:

  \[ x = \frac{400000}{75} \]

• Perform the division:

  \[ x \approx 5333.33 \]

Answer: The original price was approximately 5333.33 rubles.