A company has a contract to buy Nacl of 98% purity (2% insoluble impurity) for 2500.00 pesos per ton delivered. Its last shipment of 10 tons was only 90% pure (10% insoluble impurity) http://a.How much should it pay for the shipment? http://b.How much of this 90% material should be added to 2000 galloons of water to make a 5% w NaCl Solution.