\(L=5100\left(A^o\right)\)
\(\Rightarrow N=\dfrac{2L}{3,4}=3000\left(nu\right)\)
\(10\%N=300\left(nu\right)\)
Theo bài và NTBS ra có hệ: \(\left\{{}\begin{matrix}G-A=300\\A+G=1500\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}A=600\left(nu\right)\\G=900\left(nu\right)\end{matrix}\right.\)
\(H=N+G=3900\left(lk\right)\)