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3 years ago

5

Lilly takes a train each day to work that averages 35 miles per hour. On her way home, her train ride follows the same path and

averages 45 miles per hour. If the total trip takes 2.5 hours, which equation can be used to find n, the number of miles Lilly’s home is from her work?
Distance
(mi)
Rate
(mi/hr)
Time
(hr)
Trip to Work
n
35 mph

Trip Home
n
45 mph

StartFraction n Over 35 EndFraction times StartFraction n Over 45 EndFraction = 2.5
StartFraction n Over 35 EndFraction + StartFraction n Over 45 EndFraction = 2.5
35 n + 45 n = 2.5
35 n times 45 n = 2.5

1 answer:

Nutka1998 [239]3 years ago

5 0

Answer: - n/35+n/45=2.5 or just 49.22

Step-by-step explanation:

use the formulas t total=t1+t2 and V=n/t

n=distance, V=speed, and t=time

35=n/t1, and t1=n/35

her train ride follows the same path at 45mph

45=n/t2, and t2=n/45, so then you get - n/35+n/45=2.5

Hope this helps, now you know the answer and how to do it. HAVE A BLESSED AND WONDERFUL DAY! As well as a great rest of Black History Month! :-)

- Cutiepatutie ☺❀❤

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