This is the answer ,you should first do the multiplication then the sum.
Answer:
1st row 3 down
Step-by-step explanation:
On solving the linear system, for the value of y = 15, the value of x is 200. The correct option is D.
<h3>What is the linear system?</h3>
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.
Given
The linear equation is shown below.

The equation can be written as

For y = 15, the value of x will be.

The value of x is 200.
Thus, option D is correct.
More about the linear system link is given below.
brainly.com/question/20379472
Answer:
B
Step-by-step explanation:
100% is unknown 100:20 is 5
8,000*5=40,00