Johnny is a dog walker. He can walk 3 dogs at once. He gets paid $15 for a 30-minute walk and $20 for a 60-minute walk. Johnny works for 4 hours per day. If he always walks the maximum number of dogs possible and 6 dogs have 60-minute walks per day, how much money does he make in a week where he works 5 days?
Johnny spends 6/3=2 hours walking the 6 dogs who have 60-minute walks.
He makes $20*6=$
<gadget id="calculator">20*6</gadget>
<output>120</output>
120 for these walks.
Thus, he has 4-2=2 hours=120 minutes left to walk the other dogs.
He can walk 3*(120/30)=
<gadget id="calculator">3*(120/30)</gadget>
<output>12</output>
12 dogs in this time.
Thus, he will make $15*12=$
<gadget id="calculator">12*15</gadget>
<output>180</output>
180 on these walks.
In total per day, he makes $120+$180=$
<gadget id="calculator">120+180</gadget>
<output>300</output>
300 per day.
Thus, during the week, he makes $300*5=$
<gadget id="calculator">300*5</gadget>
<output>1_500</output>
1500.

<result>1_500</result>