The average weight of 4 men A, B, C and D is 67 kg. Another man E joins the groups and the average now becomes 65 kg. If another man F, whose weight is 4 kg more than that of E, replaces A, then average weight of B, C, D, E and F becomes 64 kg. The weight of A is.
(a) 66kgs
(b) 65kgs
(c) 64kgs
(d) 67kgs
Sol:
