Asked by abigail

in a class of 50 students ,30 study biology and 25 study economics .15 study neither biology nor economics
a.how many take both subjects?
b.how many take only biology?
c.Ho many take economics only?
Answered by R_scott
(50 - 15) study bio, eco, or both ... 35 students

30 study bio , so (35 - 30) study only eco

25 study eco , so (35 - 25) study only bio

15 study only one subject , so (35 - 15) study both
Answered by Folorunsho temiloluwa
Show The workings
Answered by Franklyn
How did you get 35?
Answered by Moses
I did not see the Venn diagram and the workings
Answered by Isaiah
Bankole
Answered by Fathia
30-x+x+25-x=50
30+25-x-x+x=50
55-1x
-1x=50-55
X=-5รท-1
Minus will cancel minus
Therefore..x=5
Answered by Joy
Ple send the Venn diagram and the workings
Answered by Melody
I didn't see the Venn diagram there and the intersection
Answered by Divine
Great
Answered by Fragile111
Pls solve it using Venn diagram
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