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2. 3.8 * 30%= 3.8 * 0.3= 1.14
3. 25- 25*0.2= 25-5=20
2. 3.8 = 100% \ 10
0.38 = 10% *3
1.14 = 30%
3. 25 zł = 100%
2.5 zł = 10 %
5 zł = 20 %
25zł - 5zł = 20 zł
Odp : Noa cena wynosi 20 zł.
licze na naj !! :p
30%×3,8=1,14
25zł⁻20%×25zł= 25-20setnych×20%=25-20/4= 25-5=20zł