A car cover a distance of 400 km at a certain speed. had the speed been 12 km/h more, the time taken for the journey would have been 1 hour 40 min less. find the original speed of car
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Answered by
1
400= Speed x Time
Xt = (x+12)(t - 1.4)
= xt -1.4x +12t - 168
Since XT=400 x=400/t
400 = 400 - 1.4x400/t + 12t -168
168=1,4x400/t +12t
168 =560/t + 12t
168 = 560 + 12t² /t
Solve the math
Xt = (x+12)(t - 1.4)
= xt -1.4x +12t - 168
Since XT=400 x=400/t
400 = 400 - 1.4x400/t + 12t -168
168=1,4x400/t +12t
168 =560/t + 12t
168 = 560 + 12t² /t
Solve the math
Answered by
0
let the speed of the car be x km/h and follow the given answer
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