Marcus can type 40 words in half a minute. rhys can type 100 words in one and a half minutes. which student can type at a greater rate of words per minute

Marcus can type faster

explained:

40in 1/2

40+40= 80 in 1min.

100in 1 1/2

1 1/2 =3/2

100/3/2 = 66.7

how to get rid of a fraction you have to multiply so to get rid of 3/2 have to multiply by 2/3 and everything you do to the body have to do to the top so hundred times 2/3 is going to give you a six six point and then six keep going or we're going to round it up to seven so 66.7 which mean Marcus types faster because he types 80 per minute

54 km / hours

step-by-step explanation:

we need to convert seconds to hours

60 seconds = 1 minutes

60 minutes = 1hour

15 m         60 second   60 minutes

  * *         = 54000 meters/ hour

second     1 minute             1 hour

now we need to convert meters to km

1000 m = 1 km

54000 m       1 km

*   = 54 km / hours

hour               1000m

step-by-step explanation: