A man has three beautiful daughters and everybody in town loved to catch a glympse at them, by the time they grew up to like age 18, the man decided to make three building in a compound for the three ladies so that people can come to see them one by one, he then set a rule for anybody that comes to see the ladies. this is the rule:
if you want to enter into any of the ladies building you must pay 50 kobo at the entrance, whatever amount of money you have on you will be doubled by the lady visited, you pay 50 kobo at exit then proceed to the next lady while the rule is repeated.
this is the question:
A man went to see the three ladies, by the time he came out of the last lady's building he had 0 kobo on him,
how much was on him before he entered the first lady's building.
you may give your answers with hypothesis.