If it took eight men ten hours to build a wall, how long would it take four men to build it?
It's already build
A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double it was.
In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled half?
We have a 100-meter piece of ribbon.
If it takes one second to cut it into a 1-meter strip how long would it take to cut the entire ribbon into 1-meter strips?