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100% - 35,7
10% - x
x= 10*35,7:100= 3,75
b) 10% z 420,5
100% - 420,5
10% - x
x= 10*420,5:100= 42,05
c) 50% z 8 i jedna druga
100% - 8 i jedna druga
50% - x
x= 50*8 i jedna druga:100= 4, 25
2.Oblicz ile to jest:
a)1% z 500 km
100% - 500km
1% - x
x= 1*500:100= 5 (km)
75% z 1000 km
100%- 1000km
75% - x
x= 75*1000:100= 750 (km)
b)5% z 1000 zł
100% - 1000zł
5% - x
x= 5*1000:100= 50 (zł)
25% z 700 zł
100%- 700 zł
25%- x
x= 25*700:100= 175 (zł)
c).10% z 200 i cztery piąte kg
100% - 200, 80 kg
10%-x
x= 10*200,80:100= 20,080 (kg)
25% z 20,20 kg
100% - 20,20 kg
25% - x
x= 25*20,20:100= 5,05 (kg)
420,5 * 0,1 =42,05
8,5 * 0,5 = 4,25
500km * 0,01 = 5 km
1000km * 0,75 = 750 km
1000zł * 0,05 = 50 zł
700zł * 0,25 = 175 zł
200⅘ kg * 0,1 = 200,8 kg * 0,1 = 20,08 kg
20,20kg * 0,25 = 5,05 kg