Pls solve the problem

Question Description order quantity 0-9.909 tons price per ton =$4500 10-17.99 = $3.000 18 tons or more 51250 a pharmacy needs 15 tons a month. regardless of amount ordered each time fixed cost is $300. Holding cost is 25% Calculate lot size (g) given = $500 a ton c$3.000 a ton given $1250 a ton what is the optimal lot size given this pricing strategy. Question Description order quantity 0-9.909 tons price per ton =$4500 10-17.99 = $3.000 18 tons or more 51250 a pharmacy needs 15 tons a month. regardless of amount ordered each time fixed cost is $300. Holding cost is 25% Calculate lot size (g) given = $500 a ton c$3.000 a ton given $1250 a ton what is the optimal lot size given this pricing strategy