###Human: There are 141 gold balloons and twice as many silver balloons. If the gold and silver balloons were added to 150 black balloons, how many balloons are there in total?, ### Assistant: Gold = 141
Silver = 141 * 2 = 282
141 + 282 + 150 = 573
There are 573 gold, silver, and black balloons in total. 
 So the answer is :  573