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Kim has exactly enough money to buy 40 oranges at \(3x\) cents each. If the price rose to \(4x\) cents per orange, how many oranges could she buy?

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Logic  Sep 10, 2018
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Let the amount of oranges that Kim could buy if the price rose to  4x  cents per orange be  n .

 

the amount of money Kim has   =   40 * 3x

 

the amount of money Kim has   =   n * 4x

 

n * 4x   =   40 * 3x

 

4nx   =   120x

                         Divide both sides of the equation by  x .

4n   =   120

                         Divide both sides of the equation by  4 .

n   =   30

hectictar  Sep 10, 2018

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