Question

all of the 6th grader students in the school 40 students wear glasses select rather the expression could represent the number of 6th graders who wore glasses

Answer 1

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

`(1)/(3)\text{ of 60 = }(1)/(3)*60=20\\e40;\text{ No}`
`(2)/(5)\text{ of 100 = }(2)/(5)*100=40;\text{ Yes}`
`(3)/(5)\text{ of 50 = }(3)/(5)*50=30\\e40\text{ No}`
`(8)/(9)\text{ of 45 = }(8)/(9)*45=40\text{ Yes}`