I need about 1/3 the number of tomatoes in eggplant. Knowing that I have twice as many tomatoes as zucchinis, and half as many bell peppers as eggplants. How many of each do I need?

The ratio between zucchini:tomato:eggplants:bell peppers is 1:2:6:3.

Since you need the least of zucchinis, you can represent it with 1.

Since you need twice as many tomatoes as zucchinis, it can be represented with 2.

You need 3 times more eggplants than tomatoes, so it can be represented with 6.

Finally you need half as many bell peppers as eggplants, so it can be represented with 3.

To find the actual amount of each one you will first need to have the amount of just one of them.