River C is 300 miles longer than River D. If the sum of their lengths is 5,570 miles, what is the length of each river?
Answer (2)
x − l e n g t h o f r i v er D x + 300 − l e n g t h o f r i v er C 5570 = x + x + 300 5570 = 2 x + 300 ∣ s u b t r a c t 300 5270 = 2 x ∣ d i v i d e b y 2 x = 2635 R i v er C i s 2935 mi l es l o n g an d r i v er D 2635 mi l es l o n g .
River C is 2935 miles long, while River D is 2635 miles long. We determined this by setting up an equation based on the information given about their lengths. After solving the equation, we found the individual lengths of both rivers.
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