করিম ও রহিমের বেতনের অনুপাত ৭ : ৫ করিমের বেতন রহিমের বেতন অপেক্ষা ৪০০ টাকা বেশি । রহিমের বেতন কত?
Created: 6 months ago | Updated: 6 days ago
Job Solution Islami Bank Bangladesh Ltd (IBBL) Islami Bank Ltd - Probationary Officer - 13.09.2013 গণিত
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Three pipes P,Q and R can fill a tank in 6 hours. After working all three together for 2 hours. R is closed and P and Q can fill the remaining part in 7 hours . The number of hours taken by R alone fill the thank is --

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Present ages of Samad and Akmal are in the ratio of 5:4 respectively . Three years later ,the ratio of their ages will become 11:9 respectively . What is akmals present age in years ?

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