Maths!!!

2008-03-27 4:35 pm
1. If 2a = 3b and 4b = 5c, find a : b : c

回答 (3)

2008-03-27 4:40 pm
✔ 最佳答案
2a = 3b
a/3=b/2
a/15=b/10

4b = 5c
b/5=c/4
b/10=c/8

a:b:c=15:10:8
2008-03-27 8:43 pm
2a=3b
2ax4=3bx4
4bx3=5cx3
8a=12b=15c

a : b : c=8 : 12 : 15
2008-03-27 6:55 pm
2a=3b 4b=5c
6a=12b 12b=15c
6a=12b=15c
a:b:c=2:4:5


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