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 traveled at a speed of 15km/h higher than the way back. Find the total length of the truck's journey to the warehouse and back.

Correct answer:

s =  180 km

Step-by-step explanation:

v2 = v1  v1/4 v1 = 15 + v2  v115 = v1  v1/4 15 = v1/4 v1=4 15=60 km/h  v2=v115=6015=45 km/h  t=11.5010.00=1.5 h s1=v1 t=60 1.5=90 km s=2 s1=2 90=180 km

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