Question 392594
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Hi
Let x represent the number out of 1250 expected to have two or more cavities
Question Sets Up the Proportion
{{{ (135/360) = (x/1250)}}}   |solving for x by cross multiplying
 360x = 135*1250
    x = 135*1250/360
    x = 469,number out of 1250 expected to have two or more cavities