Coreyrice13 Coreyrice13
  • 25-02-2022
  • Mathematics
contestada

Trisha ran 10 km in 2.5h. Jason ran 7.5 km in 2h. Olga ran 9.5 km in 2.25h. Who had the fastest average speed.

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yvonnewillemann
yvonnewillemann yvonnewillemann
  • 25-02-2022

Hello!

10 km in 2.5h.

2,5h = 150mn

150mn -> 10km

1 mn -> 10/150

60mn -> (10*60)/150

=>4km/h

Jason ran 7.5 km in 2h.

7,5 /2 =3,75

=> 3,75km/h

Olga ran 9.5 km in 2.25h.

2,25h = 120 + 0,25 * 60 =>135mn

135mn -> 9,5km

1mn -> 9,5/ 135

60mn -> (9,5*60)/ 135 =>4,22km/h

Who had the fastest average speed.: Olga

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