Mathematics

2006-11-21 2:53 am

a clock for $5.9

if we pay $10

we can get 2 clocks

what is the discount%?

回答 (3)

2006-11-21 2:59 am

✔ 最佳答案

(5.9*2-10)/5.9*2*100%
=(11.8-10)/11.8*100%
=1.8/11.8*100%
=15.3%(correct to 3 sig. figs)

參考: me

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2006-11-21 3:23 am

10/(5.9x2)x100%
=10/11.8x100%
=100/118x100%
=5000/59
=84 44/59

2006-11-20 19:24:37 補充：
10/(5.9x2)x100%=10/11.8x100%=100/118x100%=5000/59%=84 44/59%

參考: me

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2006-11-21 3:19 am

The discount =
5.9 x 2 - 10 / 10 X 100%
=11.8 - 10 / 10 x 100%
=1.8 / 10 X 100%
=180/10%
=18%

參考: MEME

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