Question: is 25 in its simplest form?
Answer: WHEH WE SAY 25% IT MEANS 25 PARTS OUT OF 100 PARTS. IN MATHEMATICS WE DENOTE IT IN THE FORM 25/100. NOW IF YOU SIMPLY DIVIDE 25 BY 100 IT WOULD TURN OUT TO BE 1/4. HENCE 25% AS A FRACTION IN ITS SIMPLEST FORM IS 1/4.