Question 370264
By 8:45 Aimee mowed 30(60+45)=30*105=3150 ft^2
By 8:45 Judy mowed 40(60+30)=30*90=2700 ft^2
22400-3150-2700=16550 left to mow
30+40+60=130/min combined
16550/130=127 min left to mow.
127+90=217 min. Judy worked.
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Ed