Question

a barge can safely haul no more than 400 tons across the river. the barge has an empty weight of 24 tons. the average weight of the railroadd cars is 4 tons each. how many railroad cars can the barge haul?

Answer 1

The barge can carry up to 94 railroad cars.

Explanation:

Create an inequality to represent the weight of the barge to the max weight.

24 + 4r ≤ 400

Solve for r:

4r ≤ 400 - 24

4r ≤ 376

4r ≤ 376/4

r ≤ 94