A manufacturer sells cooking gas stoves to shopkeepers at 10% profit, and in turn they sell the cooking gas stoves to customer to earn 15% profit. If a customer gets a cooking gas stove for ₹7,590, then what is its manufacturing cost?

₹6,000

Cost price for the customer = 7590

Let the original manufacturing cost = x, then

x × \(\frac{11}{10}\) × \(\frac{23}{20}\) = 7590

⇒ x = 7590 × \(\frac{20}{23}\) × \(\frac{10}{11}\)

x = Rs. 6000