0,70 kg ------------------- x
1 kg --------------------- x+3
x = 0,7(x+3)
x = 0,7x+2,1
x-0,7x = 2,1
0,3x = 2,1 |:0,3
x = 7
1 kg = 7+3 = 10 zł
0,5 kg = 1 kg/2 = 10/2 = 5 zł << cena 1/2kg
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
30 dag →3 zł
50 dag → x zł
x=50×3/30
x=5 zł
x+3 - cena 1kg cukierków
1kg - 70dag = (x+3)-x
30dag = x+3-x
30dag = 3zł
10dag = 1zł
0,5kg = 5zł
0,70 kg ------------------- x
1 kg --------------------- x+3
x = 0,7(x+3)
x = 0,7x+2,1
x-0,7x = 2,1
0,3x = 2,1 |:0,3
x = 7
1 kg = 7+3 = 10 zł
0,5 kg = 1 kg/2 = 10/2 = 5 zł << cena 1/2kg