সকল সরকারী/বেসরকারী পরীক্ষার প্রশ্ন পেতে ক্লিক করুন গণিতের আইকিউ টেস্ট করতে ক্লিক করুন
One worker can do a job in n hours, while it takes a second worker m hours to do the same job. How long does it take both workers?
One worker can do a job in n hours, while it takes a second worker m hours to do the same job. How long does it take both workers?
- ক. (m + n)/mn
- খ. mn/(m + n)
- গ. m + n
- ঘ. 1/m + 1/n
সঠিক উত্তরঃ mn/(m + n)
এ সম্পর্কিত আরো প্রশ্ন দেখুন
- If ‘x’ men can do a work in 8 days and ‘x + 4’ men can do it in 6 days, what is the value of ‘x’?
- Six men can complete a work in 5 days if they work for 8 hours per day. How many days will 4 men take to do the same work if they work only 5 hours per day?
- If 15 men can reap a field in 35 days, in how many days will 21 men reap the field?
- Karim and Babu can build a wooden table in 3 days. Babu can do it alone in 5 days. How many days would it take Karim to do this job alone?
- Rumi and Rony can finish a task working together in 12 days. If Rony alone can finish that in 20 days, how many days will Rumi need to finish the task working alone?
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