Final answer:
To find the sum of the three given percentages (matb, mbtd, and mctd), add them together to get 130%, which corresponds to answer option (c).
Step-by-step explanation:
When solving a question involving the sum of different percentages, the approach is to simply add the given percentages together. In this case, we are given the following percentages to add:
- matb = 20%
- mbtd = 72%
- mctd = 38%
Adding these together:
20% + 72% + 38% = 130%.
Therefore, the sum of matb, mbtd, and mctd is 130%, which makes the correct answer (c) 130%.