A and B can do a certain Job in 5 h, and A alone can do it in 8 h. How long will B take to do the Job alone?
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B will need 13 hours and 20 minutes.
B will need 13 hours and 20 minutes.Explanation- In order to complete 100% of work alone, A needs 8h time. So in 5 hours(300 minutes), he will complete 5/8 portion of total work i.e. 62.5% of total work. It means that in 5 hrs, B is doing 37.5% (100–62.5) of total work.
B will need 13 hours and 20 minutes.Explanation- In order to complete 100% of work alone, A needs 8h time. So in 5 hours(300 minutes), he will complete 5/8 portion of total work i.e. 62.5% of total work. It means that in 5 hrs, B is doing 37.5% (100–62.5) of total work.Thus in order to complete 100% of work alone, B will require (300/37.5)*100 minutes, which means a total of 800 minutes.
B will need 13 hours and 20 minutes.Explanation- In order to complete 100% of work alone, A needs 8h time. So in 5 hours(300 minutes), he will complete 5/8 portion of total work i.e. 62.5% of total work. It means that in 5 hrs, B is doing 37.5% (100–62.5) of total work.Thus in order to complete 100% of work alone, B will require (300/37.5)*100 minutes, which means a total of 800 minutes.Thus B will need 13 hours 20 minutes to complete the same work all alone.
B will need 13 hours and 20 minutes.Explanation- In order to complete 100% of work alone, A needs 8h time. So in 5 hours(300 minutes), he will complete 5/8 portion of total work i.e. 62.5% of total work. It means that in 5 hrs, B is doing 37.5% (100–62.5) of total work.Thus in order to complete 100% of work alone, B will require (300/37.5)*100 minutes, which means a total of 800 minutes.Thus B will need 13 hours 20 minutes to complete the same work all alone.PEACE...☮️✌
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