Alfonso earns $6 each day walking his aunt’s dog. He is saving to buy a mountain bike helmet for $340. Currently, he already has $40. If he walks his aunt's dog 5 days a week, in how many weeks should Alfonso work to buy his mountain bike?
Alfonso has to work for the $340 - $40 = $
<gadget id="calculator">300</gadget>
<output>300</output>
300.
In a week, he earns $6 x 5 = $
<gadget id="calculator">6*5</gadget>
<output>30</output>
30.
Thus, he needs to work $300/$30 = 
<gadget id="calculator">300/30</gadget>
<output>10</output>
10 weeks to buy the bike.

<result>10</result>