Question
A total of 28 silver folders and purple folders are in a container. The ratio of silver folders to purple folders was 2 : 5. Some pink folders and brown folders were put into the container. For every 1 purple folders that were already in the container, 5 brown ones were added. Then, the final number of silver folders and pink folders was 45 the final number of purple folders and brown folders. Find the total number of pink and brown folders.
5 m

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A total of 28 silver folders and purple folders are in a container. The ratio of silver folders to purple folders was 2 : 5. Some pink folders and brown folders were put into the container. For every 1 purple folders that were already in the container, 5 brown ones were added. Then, the final number of silver folders and pink folders was 45 the final number of purple folders and brown folders. Find the total number of pink and brown folders.