Of the 280 muffins that mr. parker baked, 40% were corn muffins. how many more corn muffins must mr. parker bake so that 60% of the muffin are corn muffins?

Shape a is congruent to shape , as shown by a reflection across the y-axis and then a translation down units. shape b is congruent to shape , as shown by a reflection across the y-axis and then a translation down units.