What has more caffeine in tee or coffee?

On average coffee, but that is not to say that tea does not have caffeine.

Tea USA brands per 8 oz has about 40 mg

Drip coffee has about 115-175 mg

Just to add a little more to this answer:

If you were to measure the amount of caffiene in tea leaves and coffee beans you would find more caffeine in tea but the way coffee beans are processed and ground means that more of the caffeine from coffee gets into the drink.

To summarise:

If you are talking about the drink:

Coffee generally has more caffeine

If you are talking about the plants:

Tea generally has more caffeine.