Respuesta :
Two tractor trailers would weigh 160,000 pounds, which is equal to 80 tons. 100-80= 20 tons that are still available.
Answer: 20 tons are still available before the bridge reaches its weight limit.
Step-by-step explanation:
Given: The weight of one tractor = 80,000 pounds
Then, the weight of two tractors =[tex]2\times80,000=160,000\text{ pounds}[/tex]
We know that 1 ton = 2,000 pounds
[tex]\Rightarrow\ 1\text{ pound}=\frac{1}{2000}\text{ton}[/tex]
Therefore, [tex]160,000\text{ pounds}=\frac{160,000}{2,000}\text{ tons}=80\text{ tons}[/tex]
Thus, the weight of two tractors come upon a bridge =80 tons
Since, the limit of bridge to handle the maximum weight of 100 tons.
∴ Number of tons still available before the bridge reaches its weight limit=
[tex]100-80=20\text{ tons}[/tex]