Question

7 men takes 2 hours to build a wall. How much time will 3 men take to make the same wall?

Answer 1

7 men takes 2 hours

1 man will take (7*2) hours

Now,

3 men will take $[ \frac{7*2}{3}]$ hours 


3 men will take (21/3)  hours 


3 men will take 7 hours 




i hope this will help you


-by ABHAY