CAT 2025 Interest — Previous Year Question

Ramesh bought a mobile from a local store. He paid 1/6 of the price via UPI and 1/3 of the price via cash. He agreed to pay the balance amount a year later. While paying back the balance amount, Ramesh paid 10% interest on the balance amount.

If the interest paid was Rs. 6000, what was the original price of the mobile?