1 hour is 15m
2 hour is 30m
3 hour is 65m
4 hour is 80m
well, clearly the LCD from the denominators of 5 and 10 is just 10, thus

Sorry I don't see a question here but .
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Try 1850.88 !!
Opp/Hyp
1770/x=sin(27)/1
1770=0.9563x
Divide
1850.883
1850.88