题目:Chris deposits a sum of money in a bank at a simple interest rate of 5%p.a.. If the amount received after 3 years will be $5750, find his principal.
我认为算式是:Let p be the principal.
p(1+5%x3)=5750
p=?
后面的答案是:$5000,可我算不出来,求高手帮我算算,最好详细点,我很笨= =·· 谢谢 !!
为什么是1.15呢?我看不明白,求解··
- -不是1.05吗?
哦,我明白了,谢谢你!
不好意思、、写错了、、
5%=0.05,0.05*3=0.15,1+0.05=1.15
所以1+%*3=1.15
为什么是1.15呢?我看不明白,求解··
追答5%=0.05
5%×3=0.05×3=0.15