If it takes a tub 2 minutes to drain 5/7 of its content, how much more time will it take for the tub to be empty?
Select the correct option
A) 48 seconds B) 1 minute, 12 seconds C) 1 minute, 50 seconds D) 2 minutes, 14 seconds E) 4 minutes, 12 seconds
If 5/7 of tub's content is drained 2/7 th of tub still needs to be drained.   If it takes 2 minutes to drain 5/7 th of tub it takes 2*(7/5) minutes to drain the entire tub and 2*(7/5)*(2/7) min to drain 2/7 th of the tub which is 4/5 minutes or 48 minutes   So answer is 48 seconds
<result>A</result>
If it takes a tub 2 minutes to drain 5/7 of its content, how much more time will it take for the tub to be empty?