To find out how much Jenny gets, we need to evaluate the given fractions. Let's break it down step by step:
1) Jenny buys an 18-inch sandwich. Since this is the whole amount, we can say Jenny gets 1 whole sandwich or 1/1.
2) Demi gets 1/2 the amount Jenny gets. To find out how much Demi gets, we multiply Jenny's amount by 1/2:
Demi's amount = Jenny's amount x 1/2
Demi's amount = 1 x 1/2
Demi's amount = 1/2
Therefore, Demi gets 1/2 of the 18-inch sandwich, which is 9 inches.
3) Joel gets 3/4 the amount Jenny gets. Similar to Demi, we multiply Jenny's amount by 3/4:
Joel's amount = Jenny's amount x 3/4
Joel's amount = 1 x 3/4
Joel's amount = 3/4
Therefore, Joel gets 3/4 of the 18-inch sandwich. To find out the exact amount, we need to multiply 3/4 by 18:
Joel's amount = 3/4 x 18
Joel's amount = 54/4
Joel's amount = 13.5 inches
Therefore, Joel gets 13.5 inches of the 18-inch sandwich.
In summary:
- Jenny gets the whole 18-inch sandwich (18 inches).
- Demi gets 1/2 of the 18-inch sandwich (9 inches).
- Joel gets 3/4 of the 18-inch sandwich (13.5 inches).