A Birthday PresentMath brain teasers require computations to solve.
John really wanted to know how much money he would get from grandpa for his birthday. But grandpa didn't want to tell him. Instead he said: "You get so much!"
"But how much is so much?", John asked.
"If I gave you so much, plus so much, plus the half of so much, plus 1/4 of so much, plus 1 EURO, you would have 100 EURO's.
How much will John get?
Answer36 EURO's : 36+36+18+9+1=100
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