KenzieSparkles
12.11.2020 •
Mathematics
Two trains leave Raleigh at the same time one traveling north and the other south the first train travels at 50 miles per hour and the second at 60 miles per hour in how many hours will the trains be in 275 miles apart
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Ответ:
Step-by-step explanation:
Step one:
given data
for train one
speed= 50miles per hour
for train two
speed= 60miles per hour
the total distance between both trains=275miles
Step two:
the expression for speed= distance/time
so that, distance= speed*time
let the time be t
we are going to combine both distances
train one distance =50t
train two distance =60t
Hence total distance
50t+60t=275
110t=1=275
t=275/110
t=2.5 hours
It will take 2.5 hours
Ответ:
12
Step-by-step explanation:
A : B
1 : 3
Since we know that B is 3 times of A and A is 4...
1 unit = 4
3 units = 4 x 3 = 12