A person can paint 2.5 ft2 of a wall in 5 minutes. How many ft2 of the wall will he paint in 6 hours?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 180.
2.5 ft2 → 5 minutes
1 minute = = 0.5 ft2 per minute
Time = 6 hours = 6 × 60 = 360 minutes
Total area painted = 0.5 × 360 = 180 ft2