When kelsey is not on the moving sidewalk, she can walk the length of the sidewalk in 3 minutes. if she stands on the sidewalk as it moves, she can travel the length in 2 minutes. if kelsey walks on the sidewalk as it moves, how many minutes will it take her to travel the same distance? assume she always walks at the same speed.

  1.2 minutes

Step-by-step explanation:

Walking, Kelsey moves 1/3 length per minute. The sidewalk moves 1/2 length per minute. Walking on the sidewalk, Kelsey moves (1/3+1/2) = 5/6 lengths per minute, or 6/5 minutes per length.

It takes Kelsey 1 1/5 minutes to walk the length on the moving sidewalk.

which expression can be used to convert 80 us dollars (usd) to australian dollars (aud)?

1 usd = 1.0343 aud

1 aud = 0.9668 usd

step-by-step explanation:

sorry just need the points

70

step-by-step explanation:

2*5=10

4*15=60

60+10=

70