Question

diana wants to make a 15ft. by 20ft. section of her yard into a garden. she will plant flowers in 2 of the garden
3
and vegetables in the rest of the garden. how many square feet of the vegetable garden will she have.

Answer 1

I assume you mean 2/3 of the garden is flowers. That leaves 1/3 that is vegetable garden, so the answer is (1/3) of the total garden area.
(1/3) x (15) x (20) = ?

Answer 2

15x20=300

Answer 3

Thats not the correct answer