number that passed chemistry --- c
number that passed biology ------ b
sketch a Venn diagram, label the circles C and B
place 8 in the intersection of the two circles
place b-8 and c-8 in the parts of the circle not overlapping.
so b-8 + 8 + c-8 = 60
b+c = 68
but it said: b = c+8
c+8 + c = 68
2c = 60
c = 30 , then b = 38
30 passed chemistry
38 passed biology
22 passed only chemistry
30 passed only biology
In a class of 60students,the number of student passed Biology is 6 more than the number of student passed Chemistry,8 student passed both subject.How many student passed Biology,how many student passed Chemistry,how many student passed only one subject?
3 answers
Please explain it further
How many students passed only one subject