Respuesta :
Answer: the slower plane will get to Chicago in 24 minutes after the faster plane had gotten there.
Step-by-step explanation:
Distance = speed × time
They leave San Francisco at the same time period and after 30 minutes(0.5 hours), the faster plane has traveled 25 more miles than the other plane. if the faster plane is traveling at 500 miles per hour, it means that the distance covered by the faster plane in 0.5 hour is
500 × 0.5 = 250 miles
Since the faster plane travelled 25 more miles after 0.5 hour, it means that the distance covered by the slower plane in 0.5 hour is
250 - 25 = 225 miles
Speed = distance/time
Speed of the slower plane
= 225/0.5 = 450 mph
Time = distance / speed
Since the total distance from San Francisco to Chicago is 1800 miles, the time it will take the faster plane to travel 1800 miles is
1800/500 = 3.6 hours
the time it will take the slower plane to travel 1800 miles is
1800/450 = 4 hours
The difference in time between both planes is
4 - 3.6 = 0.4 hour
0.4 × 60 = 24 minutes
