The enrolment of students in a school increases from 560 to 581. What percent increase in the enrolment? 


(a) 
2.75% 
(b) 
3.25% 
(c) 
3.72% 
(d) 
3.75% 
The enrolment of students in a school increases from 560 to 581. What percent increase in the enrolment? 


(a) 
2.75% 
(b) 
3.25% 
(c) 
3.72% 
(d) 
3.75% 