find the length of each person's sandwich?

an 18inch long sandwich was purchased &
Jenny cuts the sandwich so that Demi gets 1/2 of what Jenny gets and Joel gets 3/4 of what Jenny gets.

de = .5 je

jo .75 je

je + de + jo = 18

1 je + .5 je + .75 je = 18
2.25 je = 18
je = 8
then
de = 4
and
jo = 6

To find the length of each person's sandwich, we'll start by figuring out what fraction of the 18-inch sandwich each person gets.

First, let's find out what Jenny gets:
Jenny gets a share equal to 1/2 of the sandwich.

So, Jenny gets (1/2) * 18 = 9 inches of the sandwich.

Next, let's find out what Demi gets:
Demi gets 1/2 of what Jenny gets.

So, Demi gets (1/2) * 9 = 4.5 inches of the sandwich.

Finally, let's find out what Joel gets:
Joel gets 3/4 of what Jenny gets.

So, Joel gets (3/4) * 9 = 6.75 inches of the sandwich.

Therefore, the length of each person's sandwich is as follows:
- Jenny: 9 inches
- Demi: 4.5 inches
- Joel: 6.75 inches