Hi

The answer seems to be E. Are you sure it's D ?

Let x be mean of weights and n be the number of people.

=> x*n - Total Weight

From (1) we have :

x + 20 is new mean

(x + 20) (n + 3) - New total weight

[(x+20) (n + 3) - xn]/3is average weight of 3 people

Not sufficient.

From (2) we have :

x*n - 205 + 3*w = 20*n

Not sufficient.

Even (1) and (2) are not enough, so E.

Could someone please opine on whether I'm correct ?

Regards,

Subhash

_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)