There are y people on a train, and 2y add 1 people waiting at the station. If there are 13 people waiting at the station, how many people are there in total?

Answer 1

Let's denote the number of people on the train as y.

The total number of people would be y (people on the train) + 2y + 1 (people waiting at the station).

Given that there are 13 people waiting at the station, we can set up the following equation:

y + 2y + 1 = 13
3y + 1 = 13
3y = 12
y = 4

Therefore, the total number of people in total is:
4 (people on the train) + 1 (person waiting at the station) + 2*(4) (people waiting at the station) = 4 + 1 + 8 = 13 people.