Re: [計量] 有些文字繁瑣的計量請教課為板友
※ 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
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