4吨葡萄在*测得含水量99%,运抵南京后测得含水量是98%,问葡萄运抵南京后还剩几吨?

问题描述:

4吨葡萄在*测得含水量99%,运抵南京后测得含水量是98%,问葡萄运抵南京后还剩几吨?

4×(1-99%)÷(1-98%),
=4×1%÷2%,
=0.04÷2%,
=2(吨);
答:葡萄运抵南京后还剩2吨.