\(a,\) \(N=\dfrac{2L}{3,4}=3000\left(nu\right)\left(1\right)\)
\(b,\) Theo $(1)$ và theo bài ta có hệ: \(\left\{{}\begin{matrix}2A+2G=3000\\A-3G=0\end{matrix}\right.\Rightarrow\left\{{}\begin{matrix}A=1125\left(nu\right)\\G=375\left(nu\right)\end{matrix}\right.\)
\(c,M=N.300=9.10^5\left(dvC\right)\)
\(d,H=2A+3G=3375\left(lk\right)\)