Beet harvest

Beet harvest is underway in the field. The beets are transported to 3 different processing plants by 3 trucks. One truck manages to return to the field 3 times in an hour, the second after 30 minutes, and the third has the shortest route, so it turns around 5 times per hour. All the trucks left for the field at 8 in the morning. How many cars do you count in the field between 9:30 and 11:20?

Correct answer:

n =  17

Step-by-step explanation:

t1=60/3=20 min t2=30 min t3=60/5=12 min  T=(11 60+20)(9 60+30)=110 min  n1=T/t1=110/20=5 n2=T/t2=110/30=3 n3=T/t3=110/12=9  n=n1+n2+n3=5+3+9=17



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You need to know the following knowledge to solve this word math problem:

algebraarithmeticnumbersUnits of physical quantitiesGrade of the word problem

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