<human>:  Bogan laid out 10 maggots for her pet beetle. The beetle only ate 1 and Bogan had to throw out the rest. Later that day, she tried feeding again and the beetle ate 3. If Bogan served 20 maggots in total, how many did she attempt to feed the beetle the second time?
<bot>: How many maggots did Bogan serve in total? ** Bogan served a total of <<20=20>>20 maggots
How many maggots did Bogan give the beetles in the first feeding? ** Bogan gave the beetles 10 maggots in the first feeding
How many maggots did Bogan give the beetles in the second feeding? ** Bogan gave the beetles 20-10=<<20-10=10>>10 maggots in the second feeding
#### 10