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

What is the average number of students from the science discipline of all the colleges taken together?

As per the give table,

Total number of student in the college A$$=\dfrac{25\times 8000}{100}=2000$$

Total number of student in the college B$$=\dfrac{35\times 10000}{100}=3500$$

Total number of student in the college C$$=\dfrac{45\times 15000}{100}=6750$$

Total number of student in the college D$$=\dfrac{28\times 9000}{100}=2520$$

Total number of student in the college A$$=\dfrac{35\times 11000}{100}=3850$$

Hence average number of students are studying in all the colleges$$=\dfrac{2000+3500+6750+2520+3850}{5}=3724$$