Peter S.
asked • 10/30/16Thor's average driving speed is 5 km/h faster than Richard's.In the same length of time it takes Thor to drive 440 km,Richard drives only 415 km.
I need help with this problem
What is Thor's average speed?
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1 Expert Answer
RT = Rate Thor
RR = Rate Richard
RT / RR = 440 / 415
RR = RT - 5
RT / (RT - 5) = 440 / 415
RT = 88 kph
RR = 83 kph
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David W.
10/30/16