###Human: Emma bought 3 dozens of macarons in addition to her 10 pieces of macarons for a party. If 15 pieces of macarons are left over, how many pieces of macarons were eaten?, ### Assistant: Three dozens of macarons are equal to 3 x 12 = 36 pieces of macarons.
So Emma has a total of 36 + 10 = 46 pieces of macarons for the party.
Therefore, 46 - 15 = 31 pieces of macarons were eaten. 
 So the answer is :  31