The number of students who take both the subjects Mathematics and Chemistry is 30. This represents 10% of the enrollment in Mathematics and 12% of the enrollment in Chemistry. The number of students take at least one of these two subjects, is (1) 250 (2)
The number of students who take both the subjects Mathematics and Chemistry is 30. This represents 10% of the enrollment in Mathematics and 12% of the enrollment in Chemistry. The number of students take at least one of these two subjects, is (1) 250 (2) 490 (3) 560 (4) 540