翻译一些简单数学题英文题,并给出答案
piracyattacksaroundtheworlddoubleduringthefirstsixmonthoftheyear2009comparetheyearwithsameperiodin2008.whatpercentodincresethisrepersents
outofapartment'svaluethreefifth(3/5)wretakenasmortgageandtherestwaspaidwithsaxingsof20000€.whatwastheapartment;svalue