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Kumar is going to build a house. To purchase the iron rods required for construction, he visited an iron and steel shop nearby. The seller showed him some iron rods which are fresh and good. He also showed him little older iron rods which are brownish in appearance. The price of fresh rods is more than the older ones. The seller also gave some offer to older ones. Kumar’s friend Ramesh advised him not to buy the cheaper rods.
 
a. Is Ramesh right in his suggestion?

b. Could you explain the reason for his suggestion?

c. What are the values shown by Ramesh?