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? Let's be accurate as possible.
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First find the total number of flutes who were accepted: 20 flutes * .8 = 16 flutes. Then find the total number of clarinets who were accepted: 30 clarinets * .5 = 15 clarinets. Then find the total number of trumpets who were accepted: 60 trumpets * 1 / 3 = 20 trumpets. Then find the total number of pianists who were accepted: 20 pianists * 1 / 10 = 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 = 53 people.
The answer: 53.
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