It took Dad 5 more than twice as long to vacuum upstairs then to vacuum downstairs. He vacuumed for a total of 38 minutes. How many minutes did he vacuum upstairs?
Let D = time in minutes to vacuum downstairs.
Upstairs = 2D + 5 minutes
3D + 5 = 38
3D = 33.
D = 
<gadget id="calculator">11</gadget>
<output>11</output>
11 minutes.
Upstairs = (2 * 11) + 5 = 
<gadget id="calculator">(2*11)+5</gadget>
<output>27</output>
27 minutes.
Dad took 27 minutes to vacuum upstairs.

<result>27</result>