4)
We evaluate each expression and check if it is equal to 40.
If it is equal to 40, we pick yes, otherwise we pick no
[tex]\frac{1}{3}\text{ of 60 = }\frac{1}{3}\times60=20\ne40;\text{ No}[/tex][tex]\frac{2}{5}\text{ of 100 = }\frac{2}{5}\times100=40;\text{ Yes}[/tex][tex]\frac{3}{5}\text{ of 50 = }\frac{3}{5}\times50=30\ne40\text{ No}[/tex][tex]\frac{8}{9}\text{ of 45 = }\frac{8}{9}\times45=40\text{ Yes}[/tex]
