1. **State the problem:** Quame borrowed 300000 and repaid the loan in six equal instalments of 55000 each. We need to find the total interest paid. 2. **Formula and explanation:** Total amount repaid = number of instalments $ \times $ instalment amount. 3. **Calculate total amount repaid:** $$\text{Total repaid} = 6 \times 55000 = 330000$$ 4. **Calculate interest paid:** Interest = Total repaid - Principal borrowed $$\text{Interest} = 330000 - 300000 = 30000$$ 5. **Answer:** Quame paid 30000 in interest.