(b) The average distance from Earth to Mars is 2.25 x 108 km. A space ship travels from
Earth to Mars at an average speed of 5.8 x 104 km/h. How long, in hours, does the journey
take?
(b) .2
hours [2]​

Good luck because I can’t help with this I don’t even know this

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm