First, We Have Find What Two Fifths Of 150. So, Divide 150 By Five To Find 1/5 Of 150.
150 ÷ 5 = 30.
Now, To Find 2/5 Of 150, Multiply 30 By Two. So:
30 * 2 = 60
So, 60 = 2/5 of 150.
So, subtract 60 from 150.
150 - 60 = 90.
So, now we need to add 35, because 35 people get back on.
90 + 35 = 125
There are 125 passengers when the train leaves.