Michael A. answered 10/18/16
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Let's say Leah's dog weighed x pounds
So, Darlene's dog weighed 5x pounds
x + 5x = 84 (total weight of both dogs)
6x = 84
x = 14
Leah's dog weighed 14 lbs and Darlene's dog weighed 5x = 5 * 14 = 70 lbs