问题描述：
英语翻译
If each foot of water in a lake screens out 60% of the light above,what percent of the light passes through 5 feet of water?
Raul invests $1000 in a savings account that earns 5% interest compounded annually.How much money will he have in the account at the end of 5 years?
If each foot of water in a lake screens out 60% of the light above,what percent of the light passes through 5 feet of water?
Raul invests $1000 in a savings account that earns 5% interest compounded annually.How much money will he have in the account at the end of 5 years?
问题解答：
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