Question

Need help with a math question asap Double point reward!

Answer 1

We know that x + (70 - x) = 70.

So to find the product, we multiply x and (70 - x) so the answer would be the third one.

Answer 2

Px = x(70-x)
Because x + y = 70, so 70 - x = y
If 70 - x = y, then x(70-x) holds true