The car travels 60 km from city A to city B passed at speed x. On the way back, the speed was increased by 12 km / h. What is th
e initial speed if the car has traveled for a total of 10 hours?
1 answer:
Answer:
54 km/h
Step-by-step explanation:
use s=½(u+v)t
600=½(x+x+12)10
600=½(2x+12)10
600=(2x+12)5
600=10x+60
540=10x
x=54 km/h
I think this is how to do it, I'm so sorry if I do it wrong!
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