What is the difference between the total number of students who have enrolled for course C++ and SQL together from college S and the total number of students who have enrolled for the same courses together from college R?

Solution

Total number of students who have enrolled for course C++ and SQL together from college S

= $$(\frac{35}{100} \times 2000) + (\frac{16}{100} \times 1800)$$

= $$700 + 288 = 988$$

Total number of students who have enrolled for the same courses together from college R

= $$(\frac{18}{100} \times 2000) + (\frac{28}{100} \times 1800)$$

= $$360 + 504 = 864$$

=> Required difference = $$988 - 864 = 124$$

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