The truck

The empty truck left the warehouse for goods at 10:00 and arrived at 11:30. At 2:00 pm, they loaded back on the same route. But it was a quarter slower than going to the warehouse. We know that on the way to the warehouse, the car was traveling at a speed 15km/h higher than the way back. Find the total length of the journey of the truck to the warehouse and back.

Correct result:

a =  60 km/h
s =  180 km

Solution:

 b=aa/4 a=15+b  3a4b=0 ab=15  a=60 b=45  a=60=60 km/h
t=11.5010.00=1.5 h s1=a t=60 1.5=90 km s=2 s1=2 90=180 km



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