Lashon is bring to make cupcakes to take to school for her friends birthday.They recipe that she got from her mom required 3/4 cup of sugar and 1/8 cup of butter . Lashon accidentally put a whole cup of butter in the cupcake mix. To correct the error , Lashon decides to add more sugar so that she has the same ratio of sugar to butter that the original recipe requires. How much sugar should Lshon add to the mix to fix her error ?