A clothing store sells 20 shirts and 10 pairs of jeans. A shirt costs $10 each and a pair of jeans costs twice as much. How much will the clothing store earn if all shirts and jeans are sold?
Twenty shirts amount to $10 x 20 = $
<gadget id="calculator">10*20</gadget>
<output>200</output>
200.
The cost of each pair of jeans is $10 x 2 = $
<gadget id="calculator">10*2</gadget>
<output>20</output>
20.
So 10 pairs of jeans amount to $20 x 10 = $
<gadget id="calculator">20*10</gadget>
<output>200</output>
200.
Therefore, the store will earn $200 + $200 = $
<gadget id="calculator">200+200</gadget>
<output>400</output>
400 if all shirts and jeans are sold.

<result>400</result>