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## Answers

b/4=e, b=4e

c+4=e, c=e-4

d-4=e, d=e+4

a+b+c+d=100.......(1)

put the values of a,b,c, and d into equation (1). we get,

(e/4)+4e+e-4+e+4 =100

(e/4)+6e =100

e(24+1)/4=100

e=100×(4/25)

e=400/25

e=16

therefore, the value of e is 16.