Answer:
(1.3×10000)×0.05=650$
Explanation:
It was sold for 30% more than at the auction, which means we add 30% which is 0.3 of the price at the auction so 10000 + (30/100)×10000 which equals 13000. Now take 5% which is 0.05 of 13000 to get the final answer
(x% is equal to X/100)