1 because 10/9= 1 1/10
which is closer to 1
15.
0.20*x = 0.01*x + 38 => 0.19*x = 38 =>( 19/100 )*x = 38 => x = 3800/19 => x = 200.
Well if you download the app photo math and take a photo of it. It will solve it for you
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