Mathematics, 13.12.2020 04:50, Quantajah

Justin's dad claims that taking piano lessons will help Justin get into an Ivy League school one day. Justin decides to try to prove his dad wrong by interviewing a randomly selected sample of college-educated adults. Justin asks them whether they attended an Ivy League school and also whether they took piano lessons as a child. The relative frequency table below shows his results. Justin interviewed 999 randomly selected adults who attended an Ivy League school but did not take piano lessons.
How many adults in Justin's survey took piano lessons?
(Round to the nearest whole number.)

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