Awatch salesman earns a commission of 40% of all watch sales made. yesterday he sold 5 watches for $60 each and 4 watches for $40 each. how much did he earn in commission yesterday? a. $120 b. $64 c. $40 d. $184

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

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