Two cars that are 400 miles apart are traveling directly towards each other on the same road. One is averaging 45 miles per hour and the other averages 35 miles per hour. After how long will they meet?
distance between cars = 400 miles
let the cars meet each other after t hours
we know that ; speed = distance /time or distance = Speed * time
than distance traveled by car 1 in t hrs ; d1 = 45 t
distance traveled by car 2 in t hrs ; d2 = 35 t
cars can meet when they together traveled 400 miles hence
d1 +d2 = 400
or 45 t + 35 t = 400
solving we get , 80 t = 400
or, t = 400/80 = 5 hrs
Answer : Both cars will meet each other after 5 hrs ....
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