SOLUTION: a driver travels the first 120 km of a 200-km journey at an average speed of 40 km/h. he travels the remaining journey at a speed of 60 km/h. find the time taken for the whole jour
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Question 981513: a driver travels the first 120 km of a 200-km journey at an average speed of 40 km/h. he travels the remaining journey at a speed of 60 km/h. find the time taken for the whole journey.
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
_________________rate________time_________distance
part1____________40_______________________120
part2____________60_______________________200-120=80
Total________________________(?)
_________________rate________time_________distance
part1____________40__________12/4____________120
part2____________60__________8/6_____________200-120=80
Total________________________(?)
Compute the total time.
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