At the end, Pat would have 2/5 of his money left. But this is still 3 times that of Kamal.

Let Kamal’s money at the end be 2 units. Then, Pat’s money at the end would be 6 units.

6 units is equal to 2/5 of Pat’s original money.

So, 2 “units” = 6 units
5 “units” = 15 units

Pat must have had 15 units of money at first.

Kamal must have had 2 units + $150 of money at first.

Recall that Pat and Kamal had a total of $575 at first. So, we have

15 units + 2 units + $150 = $575
17 units + $150 = $575
17 units = $575 - $150
17 units = $425
1 unit = $425 / 17
1 unit = $25

Kamal’s starting money
= 2 units + $150
= 2 x $25 + $150
= $50 + $150
= $200

Is this from 5a workbook revision, if so I have the correct answer.