720 km / 9 hr = 80 km / hr.
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Lydia's speed on Tuesday was 180 miles divided by 3 hours, or 60 mph. If she then drove 7 hours at 60 mph, she drove 420 miles. Altogether, she drove 420 + 180 or 600 miles.
40 mph
505 miles in 7 hours has a value of about
9
60 x 4 = 240 miles.