Explicación paso a paso:
1 .
decena es 10=5 soles
6*5 = 30 soles
2.
8=30dias
10=x-dias
x=8*30/10
x=24 días
3.
4=100km/h
x=80km/h
X=80*4/100
x=3.2 h
4.
30=120so
18=x-sol
x=12*120/30
x=72
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Verified answer
Explicación paso a paso:
1 .
decena es 10=5 soles
6*5 = 30 soles
2.
8=30dias
10=x-dias
x=8*30/10
x=24 días
3.
4=100km/h
x=80km/h
X=80*4/100
x=3.2 h
4.
30=120so
18=x-sol
x=12*120/30
x=72