P6 whole numbers, procedural (fr S.Un)

Ee Ling baked more vanilla cupcakes than chocolate cupcakes. She also baked twice as many strawberry cupcakes as chocolate cupcakes. After she baked another 72 more chocolate cupcakes, she now had 17 more chocolate cupcakes than vanilla cupcakes. In the end, there are a total of 256 cupcakes. How many vanilla, chocolate and strawberry cupcakes did she bake at first?