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After how long will they meet?

Mathematics
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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?

Mar 20th, 2015

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 ....

Feel free the ask doubt if any ... Expecting good rating please

Mar 20th, 2015

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