On the first of the Food Dr., Miss Teasley's class brought in six cans of fruit for cans of beans send boxes of noodles and four cans of soup find the ratio of cans of fruit to the total number of food items collected and explain its meaning

What I understand from the question is:

Class brought cans of fruit = six

Cans of beans = four

Boxes of noodles = seven

Cans of Soup = four

Ratio of cans of fruit to the total number of food items = ?

Total number of food items = 6 + 4 + 7 + 4 = 21

Cans of fruits : Total number of food items

6 : 21 = 2 : 7

So the ratio of cans of fruit to the total number of food items is 2 : 7

It means two out of every seven food items the class brought is can of fruits.