সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন 
One pipe can fill a pool in 6 hours and a second pipe can fill the same pool in 12 hours. If both pipes work together, how long will it take to fill the pool?
One pipe can fill a pool in 6 hours and a second pipe can fill the same pool in 12 hours. If both pipes work together, how long will it take to fill the pool?
- ক. 4 hours
- খ. 4.5 hours
- গ. 3 hours
- ঘ. 3.5 hours
সঠিক উত্তরঃ 4 hours
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