We will find out how many toothpaste tubes can be filled with 1.5L as follows:
*First: We transform the 1.5Liters to mL:
[tex]x=\frac{1.5\cdot1000}{1}\Rightarrow x=1500[/tex]So, 1500mL.
*Second: We will determine how many tubes of toothpaste we can fill:
[tex]tt=\frac{1\cdot1500}{75}\Rightarrow tt=20[/tex]So, we can fill 20 tubes of toothpaste.