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It takes 36 minutes less time to travel 120 miles by car at night than by day because the lack of average speed at night to be 10 miles per hour faster than in the daytime. Find the average speed in the daytime. traffic allows the

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shinmin
The answer would be:
120 / t – 36 = 120/t = 1/6*10 mi/hr = 1 hr/60 min = 1/6
120 (bt) = 720 (t – 3b) + t (t-36)720t = 720t – 25920 + t^2 – 3bt0 = t^2 – 36t – 25920Get the factor. So it would be:(t – 180) (t + 144)t = 180 minutes or 3 hours.So 120/3 = 40 mph in daytime.