(a) The price of 25 identical articles = Rs 1,750
Hence, the price of one article can be calculated as follows:
Price of one article = Rs 175025=Rs 70
∴ The price of one article is Rs 70
(b) Price of 25 identical articles = Rs 1,750
Hence, the price of thirteen articles can be calculated as follows:
Price of one article = Rs 175025=Rs 70
Price of thirteen articles =13×70
=Rs 910
∴ The price of thirteen articles is Rs 910