One pump can drain a pool in 11 minutes. When a second pump is also used, the pool only takes 10 minutes to drain. How long would it take the second pump to drain the pool if it were only pump in use?

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya

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