1 150 yuan 20% discount is 1 150×0.8=920.

920 yuan can still earn 15%.

Then the cost is 920÷( 1+ 15%)=800 yuan.

After 20% discount, let 150 = 920- 150 = 770 yuan.

Loss 800-770=30 yuan.

So: loss, loss to 30 yuan.