Suppose that hotel rooms in London are $250, and usually 1,200 rooms are rented in a day.

In order to raise revenue, the mayor decides to charge hotels a tax of $20 per rented room. After the tax is imposed, the going rate for hotel rooms rises to $260, and the number of rooms rented falls to 950. Calculate the amount of revenue this tax raises for this hotel and the deadweight loss of the tax. (Hint: the area of a triangle is 1/2 * base * height.)