Question

1/8 of the passengers of a train were children if there were 40 children traveling in the train on a certain day how many adults were there in that train that day

Answer 1

1/8x= 40
x=320

so.
no of adults= 320-40
= 280
x= total no. of passengers..

Answer 2

number of passenger=1/8
number of children=40
1/8+40/1=1+320/8=40