标题: 求解释 [打印本页] 作者: wanqiu.beijing 时间: 2017-5-2 10:05 标题: 求解释 《数学高分快速突破》（陈向东）有道题没看懂（1）的意思，求解
Mr. Dan deposits $10000 in a savings certifacate earning p percent annual interest compound quarterly.
What is the value of p?
(1) During the term of the certificate, he earns $18 more than he would if the intrest were not compound.
(2)He withdraws all the money six months after depositing it.