Two machines

The first machine can produce parts in 24 hours, the second in 16 hours. The first started working in the morning at 6:00 pm. Second at 10:00 o'clock. At what hour were all parts made?

Result

x = 18:00 hh:mm Wrong answer

Solution:

 (t−6.00)/24+(t−10.00)/16=1  5t=90  x=t=18x=18:00 hh:mm \ \\ (t-6.00)/24 + (t-10.00)/16=1 \ \\ \ \\ 5t=90 \ \\ \ \\ x=t=18x=18:00 \ \text{hh}:\text{mm}

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