{"id":221000,"date":"2026-01-29T12:11:42","date_gmt":"2026-01-29T10:11:42","guid":{"rendered":"https:\/\/azbuki.bg\/?p=221000"},"modified":"2026-01-29T12:11:43","modified_gmt":"2026-01-29T10:11:43","slug":"some-simple-interest-models","status":"publish","type":"post","link":"https:\/\/bel.azbuki.bg\/en\/uncategorized\/some-simple-interest-models\/","title":{"rendered":"Some Simple Interest Models"},"content":{"rendered":"<p><strong>Tanka Milkova<\/strong><\/p>\n<p><em>University of Economics \u2013 Varna (Bulgaria)<\/em><\/p>\n<p><strong>Abstract.<\/strong> In this paper some aspects of financial mathematics and in particular some problems for simple interest are examined. As we know, the classical formula for simple interest is based on the assumption for constant initial investment and constant interest rate. The present study is mainly methodological and it examines three additional simple interest models \u2013 constant investment and variable interest rate, variable investment and constant interest rate, variable investment and variable interest rate. Some formulas are outlined \u2013 they can be used for educational purposes and for solving practical problems.<\/p>\n<p><em>Keywords:<\/em> simple interest; financial calculations; percentages<\/p>\n<p><a href=\"https:\/\/azbuki.bg\/wp-content\/uploads\/2026\/01\/math_info_2_19_tankamilkova.pdf\">>> Download the article as a PDF file <<<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Tanka Milkova University of Economics \u2013 Varna (Bulgaria) Abstract. In this paper some aspects of financial mathematics and in particular some problems for simple interest are examined. As we know, the classical formula for simple interest is based on the assumption for constant initial investment and constant interest rate. The present study is mainly methodological [&hellip;]<\/p>","protected":false},"author":124332423427287,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jnews-multi-image_gallery":[],"jnews_single_post":[],"jnews_primary_category":[]},"categories":[1],"tags":[16178,16179,16177],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Some Simple Interest Models - \u0410\u0437-\u0431\u0443\u043a\u0438<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/vocedu.azbuki.bg\/uncategorized\/some-simple-interest-models\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Some Simple Interest Models - \u0410\u0437-\u0431\u0443\u043a\u0438\" \/>\n<meta property=\"og:description\" content=\"Tanka Milkova University of Economics \u2013 Varna (Bulgaria) Abstract. In this paper some aspects of financial mathematics and in particular some problems for simple interest are examined. As we know, the classical formula for simple interest is based on the assumption for constant initial investment and constant interest rate. 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