The jewelry buyer bought 3,000 holiday motif jewelry boxes to retail for $19.99.At full price only 100 boxes sold.The buyer took a permanent markdown to $14.99 and 840 boxes sold. The buyer then took a second permanent markdown to $9.99 and 1,200 boxes sold.(21 points)

Calculate the following:

a. The permanent markdown $ for the jewelry box sale.

b. The sales dollars generated.