Carlos and Benji are at the beach. Carlos rents a canoe for $30 an hour and Benji rents a banana boat raft for $18 an hour. If Carlos uses the boat for 3 hours and Benji uses the raft for 5 hours, how much will they pay for their rentals, altogether?
Carlos would have to pay $30 x 3 = $
<gadget id="calculator">30*3</gadget>
<output>90</output>
90.
Benji would have to pay $18 x 5 = $
<gadget id="calculator">18*5</gadget>
<output>90</output>
90.
All together, Carlos and Benji will have to pay $90 + $90 = $
<gadget id="calculator">90+90</gadget>
<output>180</output>
180.

<result>180</result>