An aeroplane covers four sides of a square field at speeds 200,400,600,800 km/ hr .then the average speed of the plane in entire journey is
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հίί ʍαtε_______✯◡✯
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_________________________
һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
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✯♦let the length of field be x km
♦Total distance it flew = 4x km
total time taken =
= x/200 +x/400 + x/600 + x/800
LCM = 2400
♦Total time = 12x+6x+4x+3x /2400
= 25x/2400 hours
▶Average speed = total distance / total time
4x / (25x/2400)
Average speed = 4x*2400/25x
=4*96
= 384 km/h
.so the average speed of plane is 384 km/h
★.hope it helps
!!
✌✌
#BRAINLY★
հίί ʍαtε_______✯◡✯
.
.
.
.
_________________________
һєяє' ʏȏȗя ѧṅśwєя ʟȏȏҡıṅɢ ғȏя________
.
✯♦let the length of field be x km
♦Total distance it flew = 4x km
total time taken =
= x/200 +x/400 + x/600 + x/800
LCM = 2400
♦Total time = 12x+6x+4x+3x /2400
= 25x/2400 hours
▶Average speed = total distance / total time
4x / (25x/2400)
Average speed = 4x*2400/25x
=4*96
= 384 km/h
.so the average speed of plane is 384 km/h
★.hope it helps
!!
✌✌
#BRAINLY★
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