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Actual Bridge = 32000 oz

Actual Bridge = 2000 lbs

Actual Bridge = 1 ton

Step-by-step explanation:

Multiply the capacity in oz by the scale factor 4/1

Multiply the resulting amount of oz by the conversion factor 1 lbs/ 16 oz

Multiply the # of pounds by the conversion factor 1 ton / 2000 lbs

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: