Mary just held tryouts for the high school band. 80% of the 20 flutes got in, half the 30 clarinets got in, 1/3 of the 60 trumpets got in, and 1/10th of the 20 pianists got in. How many people are in the band total?
First find the total number of flutes who were accepted: 20 flutes * .8 = 
<gadget id="calculator">20*.8</gadget>
<output>16</output>
16 flutes.
Then find the total number of clarinets who were accepted: 30 clarinets * .5 = 
<gadget id="calculator">30*.5</gadget>
<output>15</output>
15 clarinets.
Then find the total number of trumpets who were accepted: 60 trumpets * 1/3 = 
<gadget id="calculator">60*1/3</gadget>
<output>20</output>
20 trumpets.
Then find the total number of pianists who were accepted: 20 pianists * 1/10 = 
<gadget id="calculator">20*1/10</gadget>
<output>2</output>
2 pianists.
Then add the number of each kind of instrument to find the total number of people in the band: 16 flutes + 15 clarinets + 20 trumpets + 2 pianists = 
<gadget id="calculator">16+15+20+2</gadget>
<output>53</output>
53 people.

<result>53</result>