(b) 50 ml of potency 1 solution is equivalent to 1 tablet, 50 ml of potency 2 solution is equivalent to 2 tablets and so on. Hence, 10 ml of potency 1 solution is equivalent to =5010​=51​ tabletSimilarly, 15 ml of potency 2 solution and 30 ml of potency 4 solution corresponds to 5015​×2 and 5030​×4 tablets respectively.Hence the required dosage is=51​+53​+512​=3.2 tablets