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Jay weighs 20 pounds more than Dan whose weight is twice what Kirsten's is. Their total weight is 320 pounds. How much does Kirsten weigh?

2 answers

J = D + 20

K = D/2

J + D + K = ?

(D+20) + D + D/2 = ?
J + D + K = 320

Solve for D, then K.
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