Question

anne gets 200every week for lunch money she sets aside 20 every school day how many weeks did it take for her to save up 650

Answer 1

Anne gets 200 ok
Now she take out 20 for 1 day(maybe Monday)
Ok now she take out money each day and hence has save 40 by the end of the week.
Now she does the same for the following weeks in the end of a certain 16.25 of week has 650Rs

Hope you get it.Tried to make it as simple as possible