little_dragon wrote:It costs $5.00 to mo a rectangular field 40 m long and 25 m wide. How much will it cost to mow a similar field 67.5 m wide at the same rate?
I think you crossed the dimensions...?
You appear to have used the ratio 40/25 = 67.5/x. I believe you should have:. . . . .
length : width = 40 : 25 = x : 67.5
Try it again using the ratio 40/25 = x/67.5.