You withdraw $2,000 from your account. Your bank has a desired reserve ratio of 20%. This transaction, by itself, will directly reduce what? so 2000x.20 = 400-2000=1600 so my answer - the quantity of money by 1,600, thanks for checking my answer. 2. Originally Posted by kwtolley You withdraw$2,000 from your account. Your bank has a desired reserve ratio of 20%. This transaction, by itself, will directly reduce what?