


Simple problems provide an exceptional opportunity to learn how to solve problems reliably. Once you have learned to develop problem solutions in a logically sound approach using mathematics as a language you will be able to use problems to learn and understand concepts. 
The problem is problem 13 at www.icsemaths.com/topic.htm. The site at www.icsemaths.com/ developed by Suresh Lala in Bombay provides and exceptional source of 10th grade math problems. 