Simultaneously 83038

The cable car can take a given group of skiers out in 20 minutes and the lift in 30 minutes. How long will the lift and cable car take this group out simultaneously?

Correct answer:

t =  12 min

Step-by-step explanation:

t1=20 min t2=30 min  m=1/t1+1/t2=1/20+1/30=1210.0833 1/min  t m=1  t=1/m=1/0.0833=12 min



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