The chips were divided into 4 + 6 = <<4+6=10>>10 parts.
Each part has 100/10 = <<100/10=10>>10 chips.
Since Lyle owns 6 parts, then he has 6 x 10 = <<6*10=60>>60 chips.
This is 60/100 x 100 = <<60/100*100=60>>60% of the entire chips.
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