Is ther a way we can do this problem under 2 minutes ...

[neoreaves]

I know how to solve this question but the analysis and equations drive me to atleast 4 mins ....need to cut down the time to 2 mins ...is there a way to solve it faster ?

[papgust]

Check this post. There are multiple approaches here.

https://www.beatthegmat.com/in-the-figur ... 39637.html