SOLUTION: i dont know how to solve this question and please give me amswer in detail with definations please it is requested to you for this question no 1 a car completes a journey in 3 ho

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Question 1050735: i dont know how to solve this question and please give me amswer in detail with definations please it is requested to you for this
question no 1
a car completes a journey in 3 hours 20 minutes at 75 km/hr.If the speed is reduced to 50 km/hr what time will the car take to complete the journey ?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39615) About Me  (Show Source):
You can put this solution on YOUR website!
Same journey, same distance.
Constant Rate Travel Rule for speed, time, distance, is RT=D.

Let this table of data imply variables' assignments:
                      SPEED        TIME          DISTANCE

AS DONE               75           3%261%2F3            d

HYPOTHETICAL          50           t              d

Answer by ikleyn(52772) About Me  (Show Source):
You can put this solution on YOUR website!
.
i don't know how to solve this question and please give me answer in detail with definations please it is requested to you for this
question no 1
a car completes a journey in 3 hours 20 minutes at 75 km/hr.If the speed is reduced to 50 km/hr what time will the car take
to complete the journey ?
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 

3 hours 20 minutes = 3 1%2F3 hours = 10%2F3 hours.

From the first part of the condition you can find a distance:

D = v*r = 75.10%2F3 = 250 kilometers.

Moving at the rate of 50 km%2Fh, the journey will take 250%2F50 = 5 hours.