###Human: Frank picked 36 apples. Susan picked 3 times as many apples as Frank. If Susan gave out half of her apples, and Frank sold a third of his, how many in total do they have left?, ### Assistant: Susan picked 3 times as much as 36 which is 3*36 = 108 apples
She gave out half which is 108*(1/2) = 54 apples
She now has 108-54 = 54 apples
Frank sold a third of 36 which is 36*(1/3) = 12 apples
Frank now has 36-12 = 24 apples
Altogether they now have 54+24 = 78 apples 
 So the answer is :  78