Jasmine and Peter each bought doughnuts from the same pastry shop. Jasmine spent K188 on 7  chocolate doughnut treats and 11 Raspberry rose doughnut treats. Peter spent K236 on 13 chocolate  doughnut treats and 11 Raspberry rose doughnut treats. Find the cost of one Chocolate doughnut treat  and the cost of one Raspberry rose doughnut treats.

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