Rubble has $15 in his pocket and he needs to buy 2 notebooks and 2 pens. Each notebook cost $4.00 meanwhile each pen cost $1.50. How much money will be left from Rubble after the purchase?
The total cost of two notebooks is $4.00 x 2 = $
<gadget id="calculator">4*2</gadget>
<output>8</output>
8.00.
The total cost of two pen $1.50 x 2 = $
<gadget id="calculator">1.5*2</gadget>
<output>3</output>
3.00.
So, the total amount Rubble spent for all the stuff was $8.00 + $3.00 = $
<gadget id="calculator">8+3</gadget>
<output>11</output>
11.00.
Therefore, Rubble was left off with $15.00 - $11.00 = $
<gadget id="calculator">15-11</gadget>
<output>4</output>
4.00.

<result>4</result>