Count how many each of the boys has if Alf has four times more than Jim, and Jim has three times more than Sid. All in all they have 192.

Alf 139, Jim 40, Sid 7
Alf 101, Jim 34, Sid 10
Alf 123, Jim 39, Sid 15
Alf 144, Jim 36, Sid 12

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