In 3/4 hours he clean one room
then in 1 hour =1÷3/4
1. ". =4/3 room
So in 6 hours = 4/3×6. (6÷3=2)
then. 4×2= 8 rooms
similarly Rohit can clean 8 rooms in 6 hours

Given:
- Rohit takes 3/4 hours to clean a room.
- He works nonstop for 6 hours.

To Find:
- How many rooms he can clean in 6 hours.

Procedure:

Step 1:
- Convert 3/4 hours into minutes for easier calculations.
- 3/4 hours = (3/4) * 60 minutes = 45 minutes.

Step 2:
- Calculate the number of rooms he can clean in 6 hours.
- Since he takes 45 minutes to clean a room, in 6 hours he will have 6 * 60 = 360 minutes available for cleaning.

Step 3:
- Divide the total number of minutes available for cleaning (360 minutes) by the time taken to clean a room (45 minutes) to find the number of rooms he can clean.
- 360 minutes / 45 minutes = 8 rooms.

Answer:
- Rohit can clean 8 rooms in 6 hours.

Explanation:
- Rohit takes 3/4 hours or 45 minutes to clean a room.
- In 6 hours, he has a total of 360 minutes available for cleaning.
- By dividing the total minutes available for cleaning by the time taken to clean a room, we can find the number of rooms he can clean.
- In this case, he can clean 8 rooms in 6 hours.
- This calculation assumes that Rohit works nonstop for the entire duration of 6 hours without taking any breaks.