It turns out that the ratio of grains stored in warehouses A and B is 5:4. Later, 25% of the grain stored in warehouse A is put into warehouse B, and then 30 tons are shipped out from warehouse B. At this time, the grains stored in warehouses A and B are equal. Ton?
原来甲、乙两仓库存粮数的比是5：4后来把甲仓存粮的25%放入乙仓，再从乙仓运出30吨，这时候两个粮仓存粮数相等，甲仓原来存粮多少吨？
<result>100</result>