Answer :
x - 0.1x - 0.2(x - 0.1x) = 7200 where x = original price.
0.9x - 0.2x + 0.02x = 7200
0.72x = 7200
x = 7200 / 0.72 = $10,000 Answer
0.9x - 0.2x + 0.02x = 7200
0.72x = 7200
x = 7200 / 0.72 = $10,000 Answer