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x*55+y*40=135
x+y=3
y=3-x
x*55+(3-x)*40=135
120+15x=135
15x=15
x=1
y=2
1 hour at 55, 2 hours at 40
55+80=135
__________________
James
The pessimist complains about the wind; the optimist expects it to change; the engineer adjusts the sails.- William Arthur Ward (1921-1994)
Red-beard for President, 2020
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