Question #9ff49

1 Answer
Sunayan S
May 25, 2017

The velocity of two planes are respectively 100mph and 200mph.

Explanation:

Suppose,one planes speed and anothers are respectively x mph and(x+140) mph.
In one hour first plane goes x mile and the other (x+140) mile.
According to problem,
#x²+(x+140)²=(260)²#
#=>2x²+19600+280x=67600#
#x²+140x-24000=0#
#(x-100)(x+240)=0#
The velocity cannot be negative so the velocity of the plane is 100 mph.
The other's is 200 mph.

Related questions
Impact of this question
1031 views around the world
You can reuse this answer
Creative Commons License