Alcoholism (2)

The blood alcohol level A of a person is the quantity of pur alcohol, in grammes,
contained in one litre of blood.
The unit is g.L^-1. Without any other alcohol absorption, it usually decreases by 0.15 g.L^-1 per hour.
In France : if 0.5 < A < 0.8 the driver is in breach of the law and if A > 0.8 he commits an offence.

Calculation of the maximal blood alcohol level Amax after the absorption of an alcoholic drink.
The individual absorbs an alcoholic drink on an empty stomach. His maximal blood alcohol level is reached half an hour after absorption. m is the mass of pure alcohol absorbed in g P is the mass of the person in kg S is the adiposity of the person usually for a man S = 0.7 L/kg             for a woman S = 0.6 L/kg The individual absorbs an alcoholic drink during a meal. His maximal blood alcohol level is reached 45 minutes after absorption.
	1L of alcohol weighs 0.8 kg                 m =   g
	Amax = g.L-1 round to the nearest hundredth
	blood alcohol level to lose = Amax - 0,5 = g.L-1 round to the nearest hundredth
	necessary time from the absorption on to have the blood alcohol level authorized again h give a decimal number rounded to the nearest hundredth
	answer = h min