Ling is three times as heavy as her packed suitcase. Her suitcase is 20 pounds heavier than her knapsack. The weights of Ling, her suitcase, and her knapsack total 170 pounds. How much does each weigh?

Question

Identify a variable, set up an equation, and solve. Thanks so much

Answer 1

L = 3s

k = s -20

s + 3s + s-20 = 170

Solve for s, then k and L.