Question

A tractor trailer weighs 80,000 pounds. Two tractor trailers come upon a bridge with a sign saying it can only handle 100 tons. How many tons are still available before the bridge reaches its weight limit?

Answer 1

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 =$2\times80,000=160,000\text{ pounds}$

We know that 1 ton = 2,000 pounds

$\Rightarrow\ 1\text{ pound}=\frac{1}{2000}\text{ton}$

Therefore, $160,000\text{ pounds}=\frac{160,000}{2,000}\text{ tons}=80\text{ tons}$

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=

$100-80=20\text{ tons}$

Answer 2

Two tractor trailers would weigh 160,000 pounds, which is equal to 80 tons. 100-80= 20 tons that are still available.