The total number of students who have enrolled for the course Coco SD from colleges P and R together is what percent more than the total number of students who have enrolled for the same course from college S?

Solution

% of students who have enrolled for the course Coco SD from colleges P and R together = 21% + 21% = 42%

% of students who have enrolled for the same course from college S = 38%

=> Required % change = $$\frac{42 - 38}{38} \times 100$$

= $$\frac{200}{19} = 10 \frac{10}{19} \%$$

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