Jawabanmu

2014-01-24T21:01:04+07:00
S-y=25
y=1/6s
y:s=1:6 selisih perb 5

y=1/5*25=5
s=6/5*25=30

x/y=5/3
5/y=5/3
5y=15
y=15/5
y=3

t=s/t=y/x
30/t=5/3
5t=90
t=90/5
t=18
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