John paints a giant mural that is 6m by 3m. The paint costs $4 per square meter. The artist can paint 1.5 square meters per hour and charges $10 per hour. How much does the mural cost?
The mural is 6*3=
<gadget id="calculator">6*3</gadget>
<output>18</output>
18 sq meters.
So the paint cost 18*4=$
<gadget id="calculator">18*4</gadget>
<output>72</output>
72.
The artist works for 18/1.5=
<gadget id="calculator">18/1.5</gadget>
<output>12</output>
12 hours.
He charges 12*10=$
<gadget id="calculator">12*10</gadget>
<output>120</output>
120.
So the total cost is 120+72=$
<gadget id="calculator">120+72</gadget>
<output>192</output>
192.

<result>192</result>