The Bag Of Coins Problem - Solved

You have 10 bags. One bag contains gold coins. Other 9 bags contains silver coins. You dont know which one contains gold. But you do know that a silver coin weigh 1 gram and a gold coin weigh 1 point 1 grams. You are provided with a digital weighing machine. Find out the bag with gold coins in the minimum number of readings. Assume an infinite supply of coins in each bag.