4. val buys a computer for $920. if this is 115% of what the store paid for the same computer, how much did…

4. val buys a computer for $920. if this is 115% of what the store paid for the same computer, how much did the store earn on the sale? lesson 3-3

4. val buys a computer for $920. if this is 115% of what the store paid for the same computer, how much did the store earn on the sale? lesson 3-3

Answer

Explanation:

Step1: Define store's cost as ( x )

Let ( x = ) store's cost. Then ( 115% \times x = 920 ), so ( 1.15x = 920 ).

Step2: Solve for ( x )

( x = \frac{920}{1.15} = 800 ).

Step3: Calculate store's earnings

Earnings = Selling price - Cost = ( 920 - 800 = 120 ).

Answer:

120