How much salt should ilya add to 810g of water to make 10% solution? how much solution will he make?

10/100 = x / (810+x) 

1/10 = x / (810 + x)

10x = 810 + x

9x = 810

x = 90 g salt 

mass of solution = mass of water + mass of salt

ms = mw + m salt

ms = 810 + 90

ms = 900 g of solution

You need to include the original coordinates of the triangle to answer this. and how much does it translate (move left right up down)