会计学riverbanksnowflakesyournameBecauseitalwayswaves.因为大海总是起波浪(bōlàng)wave,也有招手的意思.Areyouasleep?mushroomsunlight答案是21根，用400除以20，再加上第一根木桩(mùzhuānꞬ)就是正确的答案。用2x2x2就能得到答案(dáàn)，最先车上有8位乘客。11.Simonrentsacarinthecitytogoskiinginthemountains100kilometresaway.HestopshalfwaytopickuphisgirlfriendNinaatherhouse,anddrivestheremaining50kilometreswithher.Ontheirwayback,SimondropsNinaatherhouseanddrivesbacktothecityalone.Hereturnsthecarandpays$50fortherentaland$10forthegas.SimonandNinasharetheexpensesequitably.HowmuchshouldNinapay?Simon一起随车总共(zǒnggòng)走了200米，而Nina只随车走了100米，车费总共(zǒnggòng)花了50+10=60元，如果公正地分摊这笔费用的话，Simon应该付40元，而Nina付20元。13Thankyou！内容(nèiróng)总结