問一條數(primary)

2006-11-28 4:57 am

某書局大減價,定價200元的字典以140元售出;定價75元的原子筆以60元售出。問書籍和文具的折扣率各是多少?

回答 (5)

2006-11-28 5:05 am

✔ 最佳答案

$200x Y% = $140
Y% = $140 / $200
Y% = 70
--書籍的折扣率是70%

$75 X z% = $60
z% = $60 / $75
z% = 80
--文具的折扣率是 80%

參考: experience and the calculator

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2006-11-28 5:05 am

140/200 x 100%
=70%(七折)

60/75 x 100%
=80%(八折)

參考: 今曰互動數學書

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2006-11-28 5:03 am

140/200 x 100%
=70%(七折)

60/75 x 100%
=80%(八折)

參考: me

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2006-11-28 5:02 am

書籍:70%
文具:80%

參考: me

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2006-11-28 5:01 am

i think is......
200-140/200
75-60/75

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