how much alcohol would it take to be 2 and a half times over the driving limit?

That depends on your age, height, weight, gender, what else you ate/drank that day and what kind of alcohol you're drinking. Too many variables to say. But being 2.5 times over the legal limit is dangerously drunk. Please drink responsibly.

depending on your height and weight it takes roughly 2 drinks per hour ie: 1 12 oz beer ,1 mixed drink, 4 oz of wine to reach a .08 ( depending on your state) there is some wiggle room as far as alchohol absorbing into your system such as empty stomach ect. but if you had 5 beers in an hour your pretty much there once it enters your blood stream. Which can take as long as an hour but I would'nt take that chance.

DON'T DRINK AND DRIVE

It depends on where you live as there may be different limits in different areas. It also depends on what kind of license you have. In NYS a bus driver, for example, cannot be found to have any alcohol in his blood, except trace amounts which could be from cold/cough or flu medications.

A lot , don't try it. Do you have a death wish? Google the information , and times that times (2 1/2 ).

in the uk about 4 pints