Odpowiedź :
1. 1,4x
2. 0,6x
3. 1,6x
4. 0,4x
Wyjaśnienie:
1. 100%x + 40%x = 140%x = 1,4x
2. 100%x - 40%x = 60%x = 0,6x
3. 100%x + 60%x = 160%x = 1,6x
4. 100%x - 60%x = 40%x = 0,4x
2. 0,6x
3. 1,6x
4. 0,4x
Wyjaśnienie:
1. 100%x + 40%x = 140%x = 1,4x
2. 100%x - 40%x = 60%x = 0,6x
3. 100%x + 60%x = 160%x = 1,6x
4. 100%x - 60%x = 40%x = 0,4x