please teach me maths, thanks
回答 (2)
2007-04-29 1:51 am
✔ 最佳答案
兩邊各除１變成 a:b:c=1/2:1/5:1/4
a:b:c=0.5:0.2:0.25
a=0.5
b=0.2
c=0.25
2007-04-28 18:15:36 補充：
再將數值各乘２０(用1除0.5再除0.2再除0.25) 化為整數。得出final answer:a=10b=4c=5
2007-04-29 1:08 pm
L.C.M of a , b , c is 20
a : b : c = 1 / ( 2 / 20 ) : 1 / ( 5 / 20 ) : 1 / ( 4 / 20 )
a : b : c = 10 : 4 : 5
a : b : c = 1 / ( 2 / 20 ) : 1 / ( 5 / 20 ) : 1 / ( 4 / 20 )
a : b : c = 10 : 4 : 5
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