A math problem needs to be solved urgently!

If the width of the mirror is x meters and the length of the mirror is 2x meters, then the circumference of the mirror is 2(x+2x)=6x meters, and the area of the mirror is 2x^2 square meters.

So the cost of making a mirror is 120×2x 2 = 240×2 yuan, and the cost of making a frame is 30×6x= 180x. So the total cost of the mirror y = 240 x 2+ 180 x+45.

Bring y= 195 into the above formula 240x2+180x+45 =195, and the solution is x=- 1.25 (excluding) or x=0.5.

So the mirror is 1m long and 0.5m wide.