Question

Write a division expression that represents the weight of the steel structure divided by the total weight of the bridges materials. Bridge materials: Concrete 1000 tonsSteel structure 400 tons Glass and granite 200 tons

Answer 1

Division expression:

$\frac{w}{T}$

where w represents the weight of the steel structure and T represents the total weight of the bridge's materials.

From the information given, we know that w = 400 tons. However, to get T we have to add all the materials as follows:

$T=1000+400+200=1600$

Then, T = 1600tons.

Finally, we replace the values to get a division expression:

$\frac{400}{1600}$

Simplifying the fraction we get:

$=\frac{4}{16}=\frac{1}{4}$

Answer:

$\frac{400}{1600}=\frac{1}{4}$