[tex]\text{Hello there!}\\\\\text{We know that 25\% = 5 apples}\\\\\text{We need to multiply by 4 to get to 100\%}\\\\\text{This means we also have to multiply 5 by 4 in order to get the original}\\\text{amount of apples}\\\\5\cdot4=20\\\\\boxed{\text{Marian originally had 20 apples}}[/tex]
