Truck pile shifts

Four trucks will move the pile in 25 shifts. How many cars are needed to reduce the time by 2:5?

Final Answer:

n2 =  10

Step-by-step explanation:

n1=4 t1=25  w=25 4=100  t2=52 t1=52 25=52 25=550=10  w = n2 t2  n2=w/t2=100/10=10



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