How much concentrated solution would you take to prepare 3.00 L of 0.505 M of HCl by mixing with water?

1 litre conc HCl weighs 1200g and will contain 1200 x 0.37 = 444g or 12.16 moles HCl. 3 litres of 0.505M HCl contain 1.515 moles HCl. There are 1.515 moles in (1000x 1.515)/12.16 or 124.6 cm3 of the conc acid