Question

6 ears of corn for $1.80. What was the cost per ear?

Answer 1

Let
`c` be the price of an ear of corn. So, six ears of corn cost
`6c`. We thus have

`6c = 1.80`

Divide both sides by 6 to get

`c = (1.80)/(6) = 0.3`

Answer 2

The cost was $0.30 per ear of corn.

Explanation:

We assume that exist a linear relationship between the amount of ears of corn and the price.We also assume that it is a direct linear relationship. This means that a greater number of ears of corn imply a greater price. Now we can write this mathematically :

`((6)EarsOfCorn)/((1.80)Dollars)=((1)EarOfCorn)/(x)`

Solving in terms of x :

`x=((1)EarOfCorn.(1.80)Dollars)/((6)EarsOfCorn)=0.3Dollars`

Therefore, the cost per ear of corn is $0.30