Problematics | The rate of sending and cancelling an invitation

Are there enough equations to determine the variables? You may need to think out of the box to solve this puzzle, partly inspired by a 150-year-old classic. #press

https://www.hindustantimes.com/editors-pick/problematics-the-rate-of-sending-and-cancelling-an-invitation-101695027256797.html?utm_source=press.coop