Question

there were 81 people in a train .9 more people got in how many people are there in the train now.

Answer 1

81 + 9

= 90 people will be there in train .

Answer 2

There are 81 people in a train.

9 more people got in.

Assuming that no one got out,

just add the number of initial people and the number of people who enters.

Thus new number=81+9.

Guess you know how to add.

81+9 gives 90.

So 90 people are there now in the train.

Hope it helped.