smc

The first discount takes off $20\%$ of the price, so the cost of the refrigerator is $0.8\cdot 250$. The next discount takes off $15\%$, so the cost of the refrigerator is now $0.8\cdot 0.85\cdot 250=0.68\cdot 250$. Thus, the sale price of the refrigerator is $\boxed{\text{68\% of 250.00}}$.