Morgan's dad said that she had $90 budgeted for her birthday party. She wants to make sure she and her friends all get to play one round of mini-golf, have $5 in arcade tokens, and get to ride the go-karts twice. A round of mini-golf is $5. The Go-karts cost $10 a ride. How many friends can she invite?
The go karts will cost $20 per person because 10 x 2 = 
<gadget id="calculator">10*2</gadget>
<output>20</output>
20.
Each person costs $30 because 5 + 5 + 20 = 
<gadget id="calculator">5+5+20</gadget>
<output>30</output>
30.
Three total people can attend because 90 / 30 = 
<gadget id="calculator">90/30</gadget>
<output>3</output>
3.
She can invite 2 friends because 3 - 1 =
<gadget id="calculator">3-1</gadget>
<output>2</output>
2.

<result>2</result>