Dezeree received a $100 gift card and needs new sweaters for school. The sweaters cost $27.50 each. Write an equation to determine how many sweaters she can buy and spend exactly $100, solve it, and determine if the value is a viable solution.plzz

1 answer

To determine how many sweaters Dezeree can buy with her $100 gift card, we can write the equation:

\[ 27.50x = 100 \]

where \( x \) is the number of sweaters she can buy.

Now, we will solve for \( x \):

  1. Divide both sides of the equation by $27.50:

\[ x = \frac{100}{27.50} \]

  1. Calculate the right side:

\[ x = \frac{100}{27.50} = 3.63636\ldots \]

Since she cannot buy a fraction of a sweater, we need to determine how many whole sweaters she can afford. Therefore, we take the whole number part:

\[ x = 3 \]

Now, we can verify if buying 3 sweaters is a viable solution by calculating the total cost:

\[ \text{Total cost} = 27.50 \times 3 = 82.50 \]

Since $82.50 is less than $100, she can buy 3 sweaters and still have some money left over.

Now, let's check if she can buy 4 sweaters:

\[ \text{Total cost for 4 sweaters} = 27.50 \times 4 = 110.00 \]

Since $110.00 exceeds $100, Dezeree cannot buy 4 sweaters.

In conclusion, the viable solution is:

Dezeree can buy 3 sweaters and spend $82.50, leaving her with $17.50 left on her gift card.