Question

There are 100 students in the LEVEL 3 accounting class. 75 of them passed Business Mathematics while 40 passed in Use of English. How many students passed in both subjects?

Answer 1

75 + 40 = 115
115 - x = 100
x = 15
or draw Venn Diagram
75 -x ..... x ..... 40- c
75-x + x + 40 - x = 100
115 -x = 100
x = 15 again

Answer 2

×=15
N (ue)=(b)+n (e)-n (bne)=100=75+40-x=115-x=100=-x=100-15=-x=-15x=15