A man and a woman are together filling a tank with water. The man pours 4 liters of water every 3 minutes, while the woman pours 3 liters every 4 minutes. How much time will it take to fill 100 liters of water in the tank?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 48 min.
Man’s rate = liters per min
Woman’s rate = liters per min
Total rate = + = = liters per min
Time = = 100 × = 4 × 12 = 48 minutes