<human>:  Miss Davis gave 15 popsicle sticks to each of the 10 groups in her class. How many sticks does she have left if she had 170 popsicle sticks?
<bot>: How many popsicle sticks did Miss Davis give to the 10 groups in her class? ** Miss Davis gave a total of 15 x 10 = <<15*10=150>>150 popsicle sticks to the 10 groups in her class.
How many sticks does Miss Davis have left? ** So, she is left with 170 - 150 = <<170-150=20>>20 sticks.
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