Coins

Edmund had saved a certain number of 0.5-euro coins. He placed the coins in a single layer in a square. He had 4 coins left. When he wanted to build a square with one more row, he was missing 23 coins.
How many euros does he have?

Final Answer:

n =  86.5 Eur

Step-by-step explanation:

n = 0.5   x x   x+4 = (x+1)(x+1)23 4 = 2x + 1  23 x=13  n=0.5 (x x+4)=0.5 (13 13+4)=86.5 Eur



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