# SOLUTION: Can you please help me solve this word problem, I have tried multiple times and cannot figure it out, thank you for your help : Two planes start from the same airport and fly

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 Question 253110: Can you please help me solve this word problem, I have tried multiple times and cannot figure it out, thank you for your help : Two planes start from the same airport and fly in opposite directions. The second plane starts 1/2 hour after the first plane, but its speed is 80 km per hour faster. Find the groundspeed of each plane if 2 hours after the first plane departs the planes are 3200 km apart.Answer by Edwin McCravy(8909)   (Show Source): You can put this solution on YOUR website!Two planes start from the same airport and fly in opposite directions. The second plane starts 1/2 hour after the first plane, but its speed is 80 km per hour faster. Find the groundspeed of each plane if 2 hours after the first plane departs the planes are 3200 km apart. ``` Make this chart DISTANCE RATE TIME first plane second plane Let the rate of the first plane be x Let the rate of the second plane be 80 kph more or x+80 Fill those in: DISTANCE RATE TIME first plane x second plane x+80 The first plane's time was 2 hours The second plane's time was a half hour less or 2-.5 or 1.5 hours DISTANCE RATE TIME first plane x 2 second plane x+80 1.5 Use D=RT to fill in the distances DISTANCE RATE TIME first plane 2x x 2 second plane 1.5(x+80) x+80 1.5 They are 3200 km apart, so the sum of their distances equals 3200 2x + 1.5(x+80) = 3200 Can you solve that? If both post again asking how: Answer: x=880 The first plane was traveling 880 kph and the second plane was traveling 80kph faster or 960 kph. Edwin```