1/5 % 應是0.2% 還是 20%,

2010-05-14 9:34 pm

請問 : - 1) 1/5 % 應該是 0.2% 還是 20%

2) 2 成是否即是 20%

3) 3 A + 5 A = 6A + 16 A = ?

謝謝解答

回答 (3)

2010-05-23 10:01 pm

✔ 最佳答案

1) 1.5%是 0.2%

2) 2 成即是 20%

3) 3A + 5A = 6A +16

3A+5A-6A=16

2A=16

A=8

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2010-05-23 10:03 pm

1. 1/5% = 0.2 %
100/5%=20%

2. 2成 = 20%.

3. 3A + 5A = 6A +16
8A=6A+16
8A-6A=16
2A=16
A=8

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2010-05-14 11:45 pm

1) 1/5% = 0.2% (或者0.002)

2) 是, 2 成即是 20%.

3) 3 A + 5 A = 6A + 16 A,

then 8A = 22A,

then 14A = 0,

Hence A = 0.

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