Xiaohong's house used to have some rice. Dad said: "I have eaten 20%", and my mother said: "If you buy another 8 kilograms, it will be the same as before." How many kilograms of rice did Xiaohong's family have?
小红家原来有一些大米．爸爸说："已经吃了20%"，妈妈说："如果再买进8千克，就和原来一样多"．小红家原来有多少千克大米？
<result>10</result>