Re: [計量] 有些文字繁瑣的計量請教課為板友

看板GRE作者 (榮恩)時間15年前 (2010/08/31 22:09), 編輯推噓0(000)
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※ 引述《snake741018 (snake)》之銘言: : ※ 引述《leobigpig (leobigpig)》之銘言: : : A worker stated to work on the 1st day of a certain month : : and worked for 8 consecutive days. If the worker earned $20 per day : : on each odd-numbered day and $30 per on each even-numbered day, : : what percent of the total amount earned on the 8 days was earned : : on the odd-numbered days? : : 我算 60% : : Ans: 40% : 這題我也算60% 有一位工人他單數天的工作日薪為$20,偶數天的工作日薪為$30 他從某月1號開始做八天,請問單數天賺的錢佔總共的幾%? 1 2 3 4 5 6 7 8 四偶四單 20*4 80 ----------- = ---- = 40% 20*4+30*4 200 : : If an employee deposited $2,000 in a new credit union account : : and made a single $200 deposit during each month thereafter, : : after how many deposits will the employee have deposited total of $10,000 : : in the credit union account? : : 我算40 因為第一次不能存錢要從第二次開始算嗎? : : Ans: 41 : 這題我的感覺也會想寫40...問問其他強大的版友! 一位員工開了新戶頭,第一次存了$2000,以後每月各存$200, 請問他總共存幾次會存到$10,000元? 2000+200x = 10000 200x = 8000 x = 40 記得第一次存了兩千元呀 所以 40+1 = 41 總共存41次可達到10000元 -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 180.177.10.201
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文章代碼(AID): #1CVGqAVt (GRE)