Mrs. Irving's class had a reading contest. Marie read of 1/8 the class's total pages. Grace read of the class's total 3/8 pages. What fraction of their class's total pages did Marie and Grace read in all? Simplify the answer if possible.

Which transformations could be performed to show that aabc is similar to aa"b"c"? a reflection over the x-axis, then a dilation by a scale factor of 3 a reflection over the x-axis, then a dilation by a scale factor of 1/3 a 180° rotation about the origin, then a dilation by a scale factor of 3 a 180° rotation about the origin, then a dilation by a scale factor of 1/3