Maria is a saleswoman at a flower shop. On the first day, she sold 30 tulips and 20 roses. The next day, she doubled the previous day's sales. On the third day, she sold only 10% of the tulips sold on the second day and 16 roses. The price of one tulip is $2 and one rose is $3. How much did Maria earn over these three days?
On the second day, Maria sold 30 * 2 = 
<gadget id="calculator">30*2</gadget>
<output>60</output>
60 tulips.
She also sold 20 * 2 = 
<gadget id="calculator">20*2</gadget>
<output>40</output>
40 roses the second day.
On the third day, Maria sold only 10/100 * 60 = 
<gadget id="calculator">10/100*60</gadget>
<output>6</output>
6 tulips.
Over these three days Maria sold 30 + 60 + 6 = 
<gadget id="calculator">30+60+6</gadget>
<output>96</output>
96 tulips.
She also sold 20 + 40 + 16 = 
<gadget id="calculator">20+40+16</gadget>
<output>76</output>
76 roses.
So on the tulips Maria earned 96 * 2 = $
<gadget id="calculator">96*2</gadget>
<output>192</output>
192.
And on roses Maria earned 76 * 3 = $
<gadget id="calculator">76*3</gadget>
<output>228</output>
228.
In total, over these three days, Maria has earned 192 + 228 = $
<gadget id="calculator">192+228</gadget>
<output>420</output>
420.

<result>420</result>