The amount that each girl shades in decimal can be given as follows:
Amber shades 0, Marsha shades 0.2 and Meghan shades 2.2
The given problem can be solved by using the simple knowledge of decimal representation. Here it is said that Amber does not shade anything so we can easily say that the fraction shaded by Amber is 0. For Marsha is says that she shaded one fifth of a model, then we can see that
Marsha's amount=[tex]\frac{1}{5}[/tex]×1=0.20
Similarly for Meghan we know that she shades two models whole and one-fifth of another model, for 2 whole models we can say that her amount of shading is 2.0 and for another one-fifth it is 0.20, we can simply add all of it and get the total amount she has shaded.
Meghan's amount=2.0+0.2=2.2
Thus we find that the amount shaded by Amber is 0, Marsha has shaded 0.2 and Meghan has shaded 2.2
Learn more about decimal representation from here:
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