human
Nadine collected different colored pebbles. She has 20 white pebbles and half as many red pebbles. How many pebbles does she have in all?
assistant
How many red pebbles does Nadine have? ** Nadine has 20/2 = <<20/2=10>>10 red pebbles.
How many pebbles does Nadine have in all? ** Thus, she has 20 + 10 = <<20+10=30>>30 pebbles.
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