这是一道英语的数学题，请大家帮忙！ 谢谢了！
16.Maggiedepositsasumofmoneyinabankataninterestrateof7％p.a.compoundedhalf-yearly.Ifth...
16. Maggie deposits a sum of money in a bank at an interest rate of 7％ p.a. compounded half-yearly.If the interest she received after 3 years is 1834， find the principal.
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Let the pricipal be P
p*(1+0.07/2)^6=1834+P
1.22P=1834+P
P=7999.81=8000
p*(1+0.07/2)^6=1834+P
1.22P=1834+P
P=7999.81=8000
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