Mathematics, 09.02.2021 04:30 lifeisgaming37

A small engineering company has an old machine which produces 30 components per hour and has recently replaced it with a new machine that produces 40 components per hour. Yesterday, both machines were in operation for different periods of time. If 545 components were produced when the total number of hours was 15, determine for how many hours each machine was operating.

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A small engineering company has an old machine which produces 30 components per hour and has recentl...