<human>:  A store received 20 pallets of paper products to stock. Half the pallets were paper towels, a quarter were tissues, and a fifth were paper plates. The rest were paper cups. How many pallets of paper cups did the store receive?
<bot>: How many pallets of paper towels did the store receive? ** The store received 20 / 2 = <<20/2=10>>10 pallets of paper towels.
How many pallets of tissues did the store receive? ** They received 20 / 4 = <<20/4=5>>5 pallets of tissues.
How many pallets of paper plates did the store receive? ** They received 20 / 5 = <<20/5=4>>4 pallets of paper plates.
How many pallets of paper cups did the store receive? ** Thus, the store received 20 - 10 - 5 - 4 = <<20-10-5-4=1>>1 pallet of paper cups.
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