Truck

The truck went for 4 hours and 51 minutes. If the truck increases its speed by 23 km/h, it will go the same distance in 2 hours.

Calculate this distance.

Correct answer:

s =  78.28 km

Step-by-step explanation:

t1=4:51=4 hr 51 min =4+6051=4.85 hr=4.85 t2=2 h  v t1=s (v+23) t2=s v 4.85=s (v+23) 2=s  s4.85v=0 s2v=46  Row2Row1Row2 s4.85v=0 2.85v=46  v=2.8546=16.14035088 s=0+4.85v=0+4.85 16.14035088=78.28070175=78.28 km  s=57446278.280702 v=5792016.140351   Verifying Solution:  v2=v+23=16.1404+23=57446278.2807 km/h s1=v t1=16.1404 4.85=57446278.2807 km v2=v2 t2=78.2807 2=57446278.2807 km



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