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b)42/210=20%
c)63/210=30%
d)52,5/210=25%
e)70/210=33,(3)%
f)35/210=16,(6)%
Liczę na naj ;)
10%- 21
1% - 2,1
a)105:21=5 5*10=50 Odp: 5%
b)42:21=2 2*10=20 odp: 20%
c)63:21=3 3*10=30
d)52,5:21-2,5 2,5*10=25
e)70:21= 3,33 3,33*10=33,3
f)35:21= 1,6 1,6*10=16