book Maths Puzzle Numerical Ability

A Triangle is bisected down the middle. The height is 15 and the two hypotnuses are 25 and y. What is X and Y?

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book Other Question

Explain Substituting Equations david`s father is two year old than his mother and his mother`s age is the square of his age. They years adds up to 80 years.How old is each one of them?