The following table shows the percentage distribution of students in various disciplines from five different colleges.

What is the percentage of students from the discipline of Mathematics for colleges A and C taken together, (nearest to one decimal place)?

As per the given table,

Total number of mathematics student in the class A $$=8000\times \dfrac{40}{100}=3200$$

Total number mathematics student in the class C $$=15000\times\dfrac{35}{100}=5250$$

Hence, total number of student in mathematics in the A and C$$=3200+5250 =8450$$

Total number of available student in the class A and C $$=8000+15000=23000$$

Hence, the required percentage $$=\dfrac{8450\times 100}{23000}=36.7\%$$