Help with phenotype and genotype?

let S be smooth barked trees, and (s) be wrinkled bark. so if the mother trees are hetero... then that means they are hybrids =(Ss) crossed with (Ss) will give 4 offspring that are SS, Ss, Ss, and ss. since S is dorminant over s, then only the (ss) offspring will have the wrinkled phenotype. which is 25% (1 in 4 offspring) then out of 100 there would be ......