Câu 1.
\(H=2A+3G=2\cdot200+3\cdot300=1300\left(lk\right)\)
Câu 2.
Ta có: \(2A+2G=3000\)
Mà \(A=2G\) \(\Rightarrow3A=3000\Rightarrow A=T=1000\left(nu\right)\)
\(\Rightarrow G=X=\left(3000-1000\cdot2\right):2=200\left(nu\right)\)
\(H=2A+3G=2\cdot1000+3\cdot200=2600\left(lk\right)\)
Câu 3.
\(N=2A+2G=2\cdot200+2\cdot300=1000\left(nu\right)\)