60 ÷ 80% ÷ (1 - 25%)
= 75 ÷ 0.75
= 100元
答：降价前的价格是100元.
方程：设降价前的价格是x元.
(1 - 25%)x × 80% = 60
0.75x × 0.8 = 60
0.6x = 60
x = 60 ÷ 0.6
x = 100
答：降价前的价格是100元.