Answered earlier today:
http://www.jiskha.com/display.cgi?id=1282735117
drove from rich to boston at avg speed of 50 mph,if it took 5 hrs to drive from rich to phila at an avg speed of 70 mph and if the whole trip took 13 hrs how far is it from phila to boston?
2 answers
"Rich?" Is that supposed to be Richmond VA?
Rich to Phila distance = 70x5 = 350 miles
Boston to Phila distance = X
(X + 350)/13 = 70 mph
Solve for X
Rich to Phila distance = 70x5 = 350 miles
Boston to Phila distance = X
(X + 350)/13 = 70 mph
Solve for X