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Verified Answer :

pegah

if you want to know how much is the price for 180 ears you can say : 
4$/12 = ?/180 ⇒ ? = 180 * 4 /12 = 60 $ :))
i hope this is helpful 
have a nice day

To answer this first we set up a proportion and then solve. Lets do it:-

\(\frac{4}{12}= \frac{x}{80}\)

Cross Multiply:-

80 · 4 = 320

Divide:-

420 ÷ 12 = 60

So, 180 ears of corn are for $60.

Hope I helped ya!!