Question

The total mass of 300 wooden crates is 1500 kg. Calculate the mass of 1100 crates. in a solution ​

Answer 1

Answer:

Given:

\begin{gathered}4x-2y=5\\2x-y=10\end{gathered}

4x−2y=5

2x−y=10

To find:

The value of x and y

By using substitution method:

Solve for y

2x-10=y2x−10=y

2x-y=2x-10-2x2x−y=2x−10−2x [Subtract 2x from both side]

y=2x-10y=2x−10

y=2x-10y=2x−10

Substitute value of y in the equation

4x-2(2x-10)=54x−2(2x−10)=5

Multiply 2 with bracket,

we get

4x-4x+20=54x−4x+20=5

20=520=5

Subtract 20 on both side