中一數,1元1次方程快!!!要步驟

🎓 學業台小學及中學教育

用戶142790

2007-07-11 11:39 pm

當某數增加32%,再乘上80%後,結果是1.9008,求某數

回答 (3)

Doctor Lo

2007-07-11 11:48 pm

✔ 最佳答案

A x (1+32%) x 80% = 1.9008
A x (100% +32%) x 80% = 1.9008
A x 132% x 80% = 1.9008
A x 1.32 x 0.8 = 1.9008
A = 1.9008 / 1.32 / 0.8
A = 1.8

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Neko

2007-07-11 11:50 pm

解答如下:

設某數是y

Y x 1.32 x 0.8 = 1.9008
1.056Y = 1.9008
Y = 1.9008 / 1.056
Y = 1.8

希望幫到你啦^^

參考: myself

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mltse988

2007-07-11 11:46 pm

(X+0.32X)*1.8=1.9008
X=0.8

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