SOLUTION: Puzzle Time : There are 4 doors in a video game parlour. (door no. 1, 2, 3 & 4). There is a fee of Rs. 25 for entry as well as exit. The amount u carry inside d parlour gets dou

Question 694284: Puzzle Time :
There are 4 doors in a video game parlour. (door no. 1, 2, 3 & 4). There is a fee of Rs. 25 for entry as well as exit. The amount u carry inside d parlour gets doubled. U have to get inside d parlour thru door no. 1, come out thru door no. 2, again get inside thru door no. 3 & finally come out thru door no. 4.
Now answer - how much money u should carry while entering door no. 1 such that u have no money left after coming out of door no. 4
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
= amount carried before entering door #1 (in Rs)
after paying Rs. 25 fee to enter, you have .
At this point you are inside the parlour, so your money doubles to
.
You pay Rs. 25 to come out thru door no. 2, and again Rs. 25 to get inside thru door no. 3, ending up with
.
At this point you are inside the parlour, so your money doubles to
.
Then you pay Rs. 25 to come out thru door no. 4 with
Rs. .
Since you came out with no money left,
.
Simplifying:
--> --> --> --> -->
Solving:
--> --> --> -->
RELATED QUESTIONS
At very long hotel in Arnold, MD, there are n rooms located along a very long corridor... (answered by 303795)

In a particular school there are exactly 1000 lockers numbered 1 to 1000. In this school (answered by rapaljer,richard1234)

A man is to play a game as follows. In three tosses of balanced coin, he will get a... (answered by edjones)

If there are a total of 5 doors, then how many ways can a student enter the hall by one... (answered by Fombitz)

There are 3 adults and 2 children in Timothy’s family, and they paid $21 as the entry... (answered by greenestamps)

There are 210 control panels lined up in a row in a long room. Each control panels has... (answered by solver91311)

On a gameshow there are n ∈ N doors. Behind one of them is a prize and behind the... (answered by ikleyn)

The Big Bills are a charitable organization that conducts seven online contests with... (answered by math_tutor2020)