Answer:
25 cans of red paint.
Explanation:
Since the ratio of red paint to white paint is 5:2, we know that 5/7 of the mixture is red paint, because there are 5+2 = 7 parts, and 5 of the parts are red. Therefore, Ben needs 5/7 x 35 = 25 cans of red paint.
hope this helps:)