The cost of 10 ice creams at an ice cream stand is $30. which graph shows the cost of different numbers of ice creams at the ice cream stand?

The train A weighs 137 tons and train B weighs 60 tons.

Step-by-step explanation:

We are given the following in the question:

There are two trains.

Train A and Train B.

Let x tons be the weight of train A and y tons be the weight of train B.

Total weight = 197 tons.

Thus, we can write the equation:

Train A is heavier than train B.

The difference of their weights is 77 tons.

Thus, we can write the equation:

Solving the two equations, we get,

Thus, the train A weighs 137 tons and train B weighs 60 tons.