<human>:  Justin bought some jerseys. He bought four long-sleeved ones that cost $15 each, and some striped ones that cost $10 each. How many striped jerseys did Justin buy if he spent a total of $80?
<bot>: How much did the long-sleeved jerseys cost? ** Four long-sleeved jerseys cost $15 x 4 = $<<15*4=60>>60.
How much did the striped jerseys cost? ** So the striped jerseys amount to $80 - $60 = $<<80-60=20>>20.
How many striped jerseys did Justin buy? ** Hence, Justin bought $20/$10= <<20/10=2>>2 striped jerseys.
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