Question

A builder needs to install 10 doors in each of the 5 houses. It takes 2 hours to install each door. How long will it take the builder to install all the doors?

90 hours
95 hours
100 hours
105 hours

Answer 1

If the builder needs to install 10 doors in each of the 5 houses, then the total number of doors to be installed is:

10 doors/house x 5 houses = 50 doors

Since it takes 2 hours to install each door, the total time required to install all the doors is:

50 doors x 2 hours/door = 100 hours

Therefore, it will take the builder 100 hours to install all the doors. Answer: 100 hours.