###Human: A van is delivering  180 bottles of drinks to a neighborhood, and each bottle contains either cider or beer or a mixture of two. Out of the  180 bottles, 40 contain only cider, 80 contain only beer, and the rest are a mixture of the two drinks. If the delivery man gives half the number of each bottle of drink to the first house, how many bottles does the first house get?, ### Assistant: The total number of bottles containing cider or beer is 40+80 = 120
If the number of bottles in the van was 180, then 180-120 =60 contains a mixture of the two drinks.
At the first house, the delivery man dropped 1/2*40 = 20 bottles.
There were also 1/2*80 = 40 bottles of beer that the delivery man gave to the first house.
Together, the first house received 40+20 = 60 bottles of cider and beer
The total number of bottles that had a mixture of the two drinks that were dropped at the first house is 1/2*60 = 30
The first house got 60+30 = 90 bottles of all types of drinks. 
 So the answer is :  90