SOLUTION: Solve: (4 x 9 ÷ ?) ÷ (4 x 5) x 5 = 1.8

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Question 604526: Solve: (4 x 9 ÷ ?) ÷ (4 x 5) x 5 = 1.8
Answer by alicealc(293) About Me  (Show Source):
You can put this solution on YOUR website!
(4 x 9 ÷ ?) ÷ (4 x 5) x 5 = 1.8
(36 ÷ ?) ÷ 20 x 5 = 1.8
(36 ÷ ?) ÷ 20 = 1.8 ÷ 5
(36 ÷ ?) ÷ 20 = 0.36
(36 ÷ ?) = 0.36 x 20
36 ÷ ? = 7.2
? = 36 ÷ 7.2 = 5