Question

In a train, there were 9x + 12x people. At three successive stations, 3x, 4x and 2x people got down. How many people were left in the train? ​

Answer 1

Answer:

12x is the answer.

Step-by-step explanation:

We first add up the numbers to find the total number of people on the train.

9x + 12x = 21x

Now, we find the total number of people who got off of the train.

3x + 4x + 2x = 9x

Finally, we subtract both numbers to find the answer.

21x - 9x = 12x

Hope this helps!