Question

in an examination 60% of examines failed in mathematics 55% failed in English and 24 failed in both subjects if none of the examination passed in both subjects find the number of examines who passed in mathematics only​

Answer 1

Answer:

n(M) = 60%

n(E)= 55%

n(M U E) =100% ( as none passed in both)

n(M U E) = n(M)+n(E)-n(M ∩ E)

or, 100=60+55-n(M ∩ E)

or, n(M ∩ E) = 15

now, 15% of total examines = 24

total examines = 24*100/15= 160

no of students who passed in math only =( 55-15)% of 160 = 40*160/100=64

Answer 2

Step-by-step explanation