Question

Average of A,B,C and D =45 , Average of B, C,D and E =68. If A = 100 than find E

Answer 1

$\frac{a + b + c + d}{4} = 45$

Given a= 100

$100 + b + c + d = 180$

$b + c + d = 80$

Now,

$\frac{b + c + d + e}{4} = 68$

$80 + e = 272$

$e = 192$