The art class had a box filled with balls of yarn. the student used six and two thirds balls for a project. there are now two and two thirds left in the box. how many balls of yarn did the art class start with

(nine and one third)

Step-by-step explanation:

we can represent the situation with an equation where the x represents the original number of balls of yarn.

The students used so we must substract this from the number of balls of yarn x:

and then " there are now left in the box", so:

clearing for x:

and since

they started with (nine and one third) balls of yarn

answer: there are 453.592 grams in a pound.