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?

To find out how much Kirsten weighs, we'll start by assigning variables to the unknown quantities. Let's say Kirsten's weight is 'k' pounds.

We are given that Dan's weight is twice what Kirsten weighs. So, Dan's weight would be 2k pounds.

Now, we are also given that Jay weighs 20 pounds more than Dan. So, Jay's weight would be (2k + 20) pounds.

We know that their total weight is 320 pounds. So we can set up an equation:

k + 2k + (2k + 20) = 320

Combining like terms, we get:

5k + 20 = 320

Subtracting 20 from both sides, we have:

5k = 300

Dividing both sides by 5, we get:

k = 60

Therefore, Kirsten weighs 60 pounds.

J = D + 20

K = D/2

J + D + K = ?

(D+20) + D + D/2 = ?

J + D + K = 320

Solve for D, then K.