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Answer:
Ratio of sandwiches with white bread and brown bread is 10:3. Of the white sandwiches 2/3 are vegetarian, of the sandwiches that are brown half are vegetarian. What fraction of the sandwiches are vegetarian?
Step-by-step explanation:
Givens
The ratio between white bread and brown bread is 10:3, that is, for every 10 white bread, there are 3 brown bread.
2/3 of white sandwiches are vegetarian.
1/2 of brown sandwiches are vegetarian.
We know that white bread is represented by 10, and brown bread is represents by 3. So, 2/3 of 10 are vegetarians, and 1/2 of 3 are vegetarians. The sum of them is
2/3 of 10 are vegetarians =
1/2 of 3 are vegetarians =
Therefore, 49/6 represents all the sandwiches which are vegetarian.