Here is another puzzle where you are given two hourglasses. One hourglass can measure 7 minutes and other one can measure 4 minutes, you have to measure 9 minutes using these 2 hourglasses.

It would be really interesting to solve this puzzle. Let’s see if you can solve it, if not then scroll down to find the answer.

There are 2 hourglasses in front of you. One hourglass measures 7 minutes, while other measures 4 minutes.

How do you time 9 minutes by just using these 2 hourglasses?