Question

Two runners start from the same point at the same time. They will be 8 km apart at the end of two hours if running in the same direction and they will be 26 km apart at the end of the one hour if running in opposite direction. find their speed.

Answer 1

Step-by-step explanation:

Two runners start from the same point at the same time. They will be 8 kilometers apart at the end of two (2) hours if running in the same direction, and 26 kilometers apart at the end of one (1) hour if running in opposite directions. Find their speed.

***

let x=speed of faster runner

let y=speed of slower runner

..

running in same direction:

(x-y)*2=8

running in opposite direction:

(x+y)*1=26

..

2x-2y=8

x+y=26

..

2x-2y=8

2x+2y=52

add

4x=60

x=15

y=26-x

26-15

=11

speed of faster runner=15 km/hr

speed of slower runner=11 km/hr

Answer 2

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