Question 109324
Sally starts from the college and heads east, riding at a rate of 21 mph.
At the same time, Teresa starts from the river and heads west, riding at a rate of 15 mph. 
a. draw a diagram showing the college and the river 60 miles apart and the two cyclists riding toward each other (I can do that)! 
b. How far does each cyclist ride in t hours? (i need help with this one)!
Sally DATA:
Rate = 21 mph; Time = t hours; Distance = rt = 21t miles
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Theresa DATA;
Rate = 15 mph; time =- t hours; Distance = rt = 15t
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c. When the two cyclists meet, what must be true about the distances they have ridden? Write and solve an equation to find when they meet.(oh boy--i need help here too)!!! 
EQUATION:
Sally distance + Thresa distance = 60
21t + 15t = 60
36t = 60
6t = 10
t = (5/3) hour
t = 1 hour 40 minutes
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Cheers,
Stan H.