dark coin riddle

Logic Level 1

You have a 100 coins, that are silver on one side and gold on the other; both sides feel and taste the same so you can not distinguish between the silver face and the gold face by the sense of touch or taste. Is it possible to split the pile of coins in to two equal parts, where each halve has the same amount of gold face up as the other pile, if the only sense you can use is touch, and all you know is that there are 20 gold faces faced up and, hence 80 silver coin faces faced down?

Assumptions :

  • if one pile has 7 gold faces faced up, the other pile must have 7 gold faces up as well

  • you can not hear, smell, see or taste anything, but only can touch

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