An author of a book got 6% of the total sales of the paper cover version of his books and 12% of the total sales of the hardcover version. If 32,000 copies of the paper cover version were sold at $0.20 each and 15,000 copies of the hardcover version were sold at $0.40 each, how much did the author earn?
The total earnings for the paper cover version were $0.20 x 32 000 = $
<gadget id="calculator">0.20*32000</gadget>
<output>6_400</output>
6,400.
So, the author earned $6,400 x 6/100 = $384 from the paper cover version.
The total earnings for the hardcover version were $0.40 x 15,000 = $
<gadget id="calculator">0.40*15000</gadget>
<output>6_000</output>
6,000.
So, the author earned $6,000 x 12/100 = $
<gadget id="calculator">6000*12/100</gadget>
<output>720</output>
720 from the hardcover version.
Therefore, the author earned a total of $384 + $720 = $
<gadget id="calculator">384+720</gadget>
<output>1_104</output>
1104.

<result>1_104</result>