Two planes are flying towards each …
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Rupender Singh 6 years, 11 months ago
Let the speed of First plane is x km/hr and second plane is (x + 60) km/hr.
Time taken to pass each other = 5 hours.
Than, Distance covered by first plane in 5 hours = speed × time = x × 5 = 5x.
Distance covered by second plane in 5 hours = speed × time = (x + 60) 5 = 5x + 300
Distance coverec by first plane + distance covered by second plane = 2400 km
5x + (5x + 300) = 2400
10x + 300 = 2400
10x = 2400 - 300 = 2100
x = {tex}{{2100} \over {10}}\, = \,210{/tex}
Hence, the speed of first plane is = x = 210 km/hr
and the speed of second plane is = x + 60 = 210 + 60 = 270 km/hr
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