SOLUTION: Jessie went to visit her mom who's living in the next town. She travelled 150 kilometers to get there. She took the jeepney and it travelled at an average of 30 kph, then she got o

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Question 1090418: Jessie went to visit her mom who's living in the next town. She travelled 150 kilometers to get there. She took the jeepney and it travelled at an average of 30 kph, then she got on a bus which travelled at an average of 70 kph. The entire trip was 3 1/2 hours long. How far did Jessie travel while she was on the bus?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
                  SPEED         TIME         DISTANCE
JEEPNEY            30
BUS                70
Total                           3&1/2        150




How far did Jessie travel while she was on the bus?
                  SPEED         TIME         DISTANCE
JEEPNEY            30          (150-d)/30    150-d
BUS                70           d/70          d
Total                           3&1/2        150

highlight_green%28%28150-d%29%2F30%2Bd%2F70=3%261%2F2%29
-
%28150-d%29%2F30%2Bd%2F70=7%2F2, LCD is 210,
7%28150-d%29%2B3d=7%2A105
1050-7d%2B3d=735
-4d=-315
d=315%2F4
highlight%28d=78%263%2F4%29