TOTAL number of students enrolled in the 5 subjects = 12500Percentage of students enrolled under Botany = 20%Percentage of students enrolled under ZOOLOGY = 23%Total percentage of students enrolled under Botany and Zoology= 20 + 23 = 43Total number of students enrolled under Botany and Zoology TOGETHER in all universities of the state= 12500 × (43/100)= 5375∴ Total number of students enrolled under Botany and Zoology together in all universities of the state is 5375.