SOLUTION: alex hauled a load of pipe from fairbanks to deadhorse on a highway in a record time of 13 hours 15 minutes.From fairbanks to coldfoot he averaged 30 mph. Because of a blizzard ,he

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Question 1054546: alex hauled a load of pipe from fairbanks to deadhorse on a highway in a record time of 13 hours 15 minutes.From fairbanks to coldfoot he averaged 30 mph. Because of a blizzard ,he averaged 10 mph less from coldfoot to deadhorse. If coldfoot is the halfway point ,then what is the distance from fairbanks to coldoot?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
                           SPEED         TIME           DISTANCE

Fairbanks to Coldfoot      30             x               d

Coldfoot to Deadhorse      20             y               d

TOTAL                                  13%261%2F4



Further thinking should or can give you this:
                           SPEED         TIME           DISTANCE

Fairbanks to Coldfoot      30            d%2F30             d

Coldfoot to Deadhorse      20             d%2F20               d

TOTAL                                  13%261%2F4

One very obvious sum equation:
d%2F30%2Bd%2F20=13%261%2F4