SOLUTION: what does constant mean? Salami and More Deli sells a 5 foot submarine sandwich for parties. It weighs 8 pounds. Assuming that the weight per foot is constant, what would be the le

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Question 351895: what does constant mean? Salami and More Deli sells a 5 foot submarine sandwich for parties. It weighs 8 pounds. Assuming that the weight per foot is constant, what would be the length of a 12-pound sandwich?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
what does constant mean? Here, it just means each foot of sandwich weighs the same;
:
Salami and More Deli sells a 5 foot submarine sandwich for parties.
It weighs 8 pounds.
Assuming that the weight per foot is constant, what would be the length
of a 12-pound sandwich?
:
two ways to do this:
Find the weight of 1 foot of sandwich
8%2F5 = 1.6 lb per ft
then
12%2F1.6 = 7.5 ft (7 ft 6 inches)
Or
you can use a ratio equation, let x = the length of 12 lb sandwich
x%2F5 = 12%2F8
Cross multiply
8x = 5 * 12
8x = 60
x = 60%2F8
x = 7.5 ft