The sum of the ages of Anup and his father is 100. When Anup is as old as his father now, he will be five times as old as his son anuj is now. Anuj will be eight years older than Anup is now, when anup is as old as his father. What are their ages now?

The sum of the ages of Anup and his father is 100. When Anup is as old as his father now, he will be five times as old as his son anuj is now. Anuj will be eight years older than Anup is now, when anup is as old as his father. What are their ages now? Sol : Let Anup's present age be x years. His father's present age = 100 - x. Therefore, Anup's present age = (100-x)/5 years. Anup becomes as old as his father is now after (100-2x) years. Therefore after 100-2x years, we have anup's age = {(100-x)/5 (100-2x)} =(600-11x)/5. It is given that...

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Magnetism

Magnetism The word magnetism is derived from Magnesia, the place where magnetic iron "ORE" was first discovered. Magnet is a substance which possesses the property of attracting small pieces of iron and sets its in North-South direction when suspended freely. The Magnetism is a phenomenon by which this attraction takes place. Magnetic Poles If a magnet is dipped into iron filings, it is noted that the fillings cling in tufts, usually at two places in particular i.e. near the ends. Few filings are attracted in the middle of the bar....

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