Manny signed up for Karate classes for $60. His parents tell him that if his classes end up costing more than $10 per class, then they won't sign him up again. If there are 10 total classes, how many can he miss before they don't sign him up again?
He must attend at least six classes, because 60 / 6 = <<60/6=10>>10
He can skip 4 class because 10 - 4 = <<10-4=6>>6
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