Carla spends 10 minutes sharpening her knife and 3 times that amount of time peeling vegetables. How much time does she spend on these activities total?
First find the total time Carla spends peeling vegetables: 10 minutes * 3 = 
<gadget id="calculator">10*3</gadget>
<output>30</output>
30 minutes.
Then add the time she spent sharpening her knife: 30 minutes + 10 minutes = 
<gadget id="calculator">30+10</gadget>
<output>40</output>
40 minutes.

<result>40</result>