Three candy bars cost ¢25 x 3 = ¢<<25*3=75>>75.
Two pieces of chocolate cost ¢75 x 2 = ¢<<75*2=150>>150.
So, the total amount needed to buy those is ¢75 + ¢150 + ¢50 = ¢<<75+150+50=275>>275.
Since a quarter is equal to ¢25, therefore ¢275/¢25 = <<275/25=11>>11 quarters are needed.
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