新鲜的苹果100POUNDS,CONTAIN WATER WAS 99%,如果经过几天晒干,ENOUGH WATER被蒸发,苹果的含量不变,那么CONTAIN WATER WAS 98%,问这几天晒干后,苹果重多少??
答案:50 (有80,70,60,50,40)作者: lisaislisa 时间: 2002-12-28 22:43
can not understand ...
sorry it means the apple losses 1% water ??
seems not so...then ....??
^^作者: hilisa 时间: 2002-12-29 08:53
100 pound original with 99% water, so apple flesh is 1 pound, suppose apple is total x pound after drying, then (x-1)/x = 98%, => x = 50
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