book Maths Puzzle Numerical Ability

The sum of 2 numbers is 25. The sum of their squares is 313. Find the two numbers...thank you!

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a radio tower casts a shadow 120 meters long when the angle of elevation of the sun is 41 (degrees. how tall is the tower? A and B are 30km apart. If they leave at the same time and travel in the same direction, A overtakes B in 60 hours. If they walk toward each toher, they meet in 5 hours. What ar