E and F are the points on the sides BC and CD of a parallelogram ABCD. If vec(BE) = 4 vec(EC) and

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Q 2272256136.     E and F are the points on the sides BC and CD of a

parallelogram ABCD. If

vec(BE) = 4 vec(EC) and

vec(CF) = 4 vec(FD) .

The line EF cut the diagonal AC in G

then vec(AG) = lambda vec(AC), then the

value of 400 lambda must be

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