There are 14 green papayas on the papaya tree.  On Friday, two of the fruits turned yellow.  On Sunday, twice as many fruits as on Friday turn yellow.  How many green papayas are left on the tree?
On Sunday 2 x 2 = <<2*2=4>>4 papayas turned yellow.
A total of 2 + 4 = <<2+4=6>>6 papayas turned yellow.
There are 14 - 6 = <<14-6=8>>8 green papayas still left on the tree.
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