First find the number of complaints per day when the store is short-staffed: 120 complaints/day * 4/3 = <<120*4/3=160>>160 complaints/day

Then find the number of complaints per day when the self-checkout is broken and they're short-staffed: 160 complaints/day * 1.2 = <<160*1.2=192>>192 complaints/day

Then multiply the number of complaints per day by the number of days to find the total number of complaints: 192 complaints/day * 3 days = <<192*3=576>>576 complaints

# Answer

576
<|im_start|>system
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<|im_start|>user
The Jacksonville Walmart normally gets 120 customer complaints per day. That number increases by 1/3rd when they're short-staffed and this increases by another 20% when the self-checkout is broken. If the store was short-staffed and the self-checkout was broken for 3 days, how many complaints does the store get?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
576
The Jacksonville Walmart normally gets 120 customer complaints per day. That number increases by 1/3rd when they're short-staffed and this increases by another 20% when the self-checkout is broken. If the store was short-staffed and the self-checkout was broken for 3 days, how many complaints does the store get?
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