Question

The number of students who take both the subjects Mathematics and Chemistry is 70. This represents 10% of the enrollment in Mathematics and 14% of the enrollment in Chemistry. The number of students take at least one of these two subjects, is (1) 1120 (2) 1130 (3) 1100 (4) insufficient data

Answer 1

The answer is 1130...

Answer 2

Answer:1130 students

Step-by-step explanation:

as given math and chemistry n(A∩B) =70

so enrollment in maths n(A)= 700

and enrollment in chemistry n(B) = 500

as we know

$n(A\bigcup B)=n(A) + n(B) - n(A\bigcap B)\\\\= 700+500-70\\\\=1130$

so at least 1130 students take one of these two subjects.

hence option 2 is correct.