Edward A. answered • 03/08/18

Tutor

New to Wyzant
Math Tutor, Retired Computer Scientist and Technical Communicator

Translation is the harder part. We will get to your equation as follows:

First identify all the quantities involved (even though it’s more than one; bear with me)

Let S be the cost of a shirt.

Let J be the cost of jeans.

Now Translate the words into equations:

Translate “the cost of a shirt“ into “S”.

Translate “is 3 more than half the price of jeans” Into “= 3 + J/2”

Put them together:

S= 3 + J/2

Now, Translate “the cost of jeans and shirt is $45” into “J + S = 45”

so So you have two equations, and two variables. That’s life! But it’s easy to simplify. You have an equation giving a formula for S, so replace “S” with “(3 + J/2)” in the equation with 45 in it.

j + (3+ J/2) = 45

now you have one equation and one variable. Solve it, and you’ll have the price of jeans.

subtract that from 45, and you’ll have the price of a shirt.

Edward A.

tutor

You’re very welcome!

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03/09/18

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03/09/18