Each iPhone X cost $600 so three iPhone Xs without the discount would cost 3*$600 = $<<3*600=1800>>1800

The discount is 5% and 5% of $1800 is (5/100)*$1800 = $<<5/100*1800=90>>90 which is what they get to save by buying collectively.

# Answer

90
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A smartphone seller is offering a discount of 5% off for customers who buy at least 2 smartphones at once. Melinda, Zoe and Joel want to buy an iPhone X each. If an iPhone X costs $600, how much can they save by pooling their money together and buying three iPhones at once from this seller rather than buying individually?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
90
A smartphone seller is offering a discount of 5% off for customers who buy at least 2 smartphones at once. Melinda, Zoe and Joel want to buy an iPhone X each. If an iPhone X costs $600, how much can they save by pooling their money together and buying three iPhones at once from this seller rather than buying individually?
train