Situation 78694

There is a geyser and a volcano in a nature reserve in Iceland. The geyser erupts regularly every 18 days, and clouds of smoke rise from the volcano every 40 days. how many times in the course of 9000 days will there be a situation where we can observe both of these natural phenomena on the same day?

Correct answer:

n =  25

Step-by-step explanation:

a=18 d b=40 d  18=232 40=235 LCM(18,40)=23325=360  t=LCM(a,b)=LCM(18,40)=360 d  n=9000/t=9000/360=25

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