Alex has 2*4=<<2*4=8>>8 black marbles

Alex has 22/2=<<22/2=11>>11 yellow marbles

Alex has 8+11=<<8+11=19>>19 marbles

# Answer

19
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
Lorin has 4 black marbles. Jimmy has 22 yellow marbles. Alex had twice as many black marbles as Lorin and one half as many yellow marbles as Jimmy. How many marbles does Alex have?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
19
Lorin has 4 black marbles. Jimmy has 22 yellow marbles. Alex had twice as many black marbles as Lorin and one half as many yellow marbles as Jimmy. How many marbles does Alex have?
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