Odpowiedź:
[tex]18.a)150 \times 0.75 = 112.5 \\ b)0.18 \times 0.6 = 0.108 \\ c)50.5 \times 1.4 = 70.7[/tex]
[tex]19.a)0.75x = 6.3 \\ x =6.3 \div 0.75 \\ x = 8.4 \\ \\ 0.2y = 10.4 \\ y = 10.4 \div 0.2 \\ y = 52[/tex]
[tex]b)0.3x = 4.02 \\ x = 4.02 \div 0.3 \\ x = 13.4 \\ \\ 0.7y = 45.5 \\ y = 45.5 \div 0.7 \\ y = 65[/tex]
[tex]c)1.2x = 72 \\ x = 72 \div 1.2 \\ x = 60 \\ \\ 2.4y = 25.2 \\ y = 25.2 \div 2.4 \\ y = 10.5[/tex]
