30%的r%是6
115的s%是$72
320m的t%是16m
請求您們加以解釋
please help me to do my homework
2007-11-06 4:01 am
回答 (2)
2007-11-06 4:08 am
✔ 最佳答案
1. 30% * r% = 60.3*(r/100) = 6
0.3r = 600
r = 2000
2. 115*s% = 72
115*s / 100 = 72
s = 7200/115
s = 1440/23
3. 320*t% = 16
320t/100 = 16
t = 1600/320
t = 5
2007-11-06 10:46 am
1) 6 / 3 = 2
2 X 10 = 20
2)72 / 15 = 4.8
4.8 X 10=48
3)16 / 32 = 0.5
0.5 X 10 = 5
2 X 10 = 20
2)72 / 15 = 4.8
4.8 X 10=48
3)16 / 32 = 0.5
0.5 X 10 = 5
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