Paper 1 May/June 2018 Accounting (9706/11) A Level

A business sold a non-current asset. It had been purchased for $\$ 15000$ and had an estimated life of 10 years, with no residual value. It was depreciated using the straight-line method.
It was sold after six years.
Disposal costs were $\$ 1000$ and there was a profit on disposal of $\$ 3000$.
What was the sale price?