The chips each have 60/10 = <<60/10=6>>6 calories
That means the cheezits have 6/3 = <<6/3=2>>2 calories more than each chip
So they have 6 + 2 = <<6+2=8>>8 calories each
That means they have 6 * 8 = <<6*8=48>>48 total calories
So in total, he ate 60 + 48 = <<60+48=108>>108 calories
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