book Maths Puzzle Numerical Ability

Can you please help me find two consecutive positive integers that the sum of their squares is 85.

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book Other Question

A paleontonlogist finds a bone that has 25% of the amount of carbon-14 found in living b tissue. How old is the bone? well my problem is...i dont even know where to start when doing these word problems...im easily confused when it comes to these types of problems...what can i do?