maciek610
proszę rozwiążcie
1 answer
a) 13% - 18,2kg 100% - x 13% * x = 18,2kg * 100% procenty sie skracaja 13x = 1820/:13 x = 140kg b) 66 2/3 % - 24cm 100% - x 66 2/3 x = 2400cm 200/3 x = 2400cm/*3 200x = 7200cm zera można skrócic 2x = 72cm/:2 x = 36cm c) 33 1/3% - 18dm 100% - x 33 1/3x = 1800dm 100/3x = 1800dm/*3 100x = 5400dm x = 54dm d) 43% - 107,5km 100% - x 43x = 10750km/:43 x = 250 e) 125% - 2h 30 min 25% - x 125% - 150/60 min 25 - x 125x = 3750/60 min /*60 7500x = 3750 h /: 7500 x = 1/2h 1/2h * 4 = 2h - 100% f) 175% - 3m 50 cm 100% - x 175% - 350cm 100% - x 35000 = 175x/:175 x = 200cm x =2m g) 210% - 3h 30 min 100% - x 210% - 210/60 h 100% - x 21000/60 h = 210x /*60 21000 h = 12600x 210h = 126x 105h = 63x 35h = 21x/:21 x= 1 14/21 h x= 1 2/3h x= 1h 40 min h) 1500% - 2kg 75dag 100% - x 1500% - 275 dag 100% - x 1500x = 27500 dag 15x = 275 dag 3x = 55 dag/:3 x = 18 1/3 dag
ewaiaga
Najnowsze pytania w kategorii Matematyka
Ładuj więcej