Alonso has $460 to spend at a bicycle store for some new gear and biking outfits. Assume all prices listed include tax.

He buys a new bicycle for $270.71.
He buys 4 bicycle reflectors for $3.09 each and a pair of bike gloves for $33.71.
He plans to spend some or all of the money he has left to buy new biking outfits for $68.20 each.

Write and solve an inequality which can be used to determine xx, the number of outfits Alonso can purchase while staying within his budget.

1 answer

To determine how many biking outfits Alonso can purchase while staying within his budget, we need to first find out how much money he has left after his initial purchases.

  1. Calculate the total cost of the initial purchases:

    • Cost of the new bicycle: $270.71
    • Cost of 4 bicycle reflectors at $3.09 each: \[ 4 \times 3.09 = 12.36 \]
    • Cost of the pair of bike gloves: $33.71

    Now, let's find the total cost of these items: \[ \text{Total cost} = 270.71 + 12.36 + 33.71 \]

    Performing the addition: \[ 270.71 + 12.36 = 283.07 \] \[ 283.07 + 33.71 = 316.78 \]

    So, the total cost of the bicycle and accessories is $316.78.

  2. Determine the remaining money: \[ \text{Remaining money} = 460 - 316.78 = 143.22 \]

  3. Express the cost of outfits in terms of the number of outfits (x): Each biking outfit costs $68.20, so if \( x \) is the number of outfits, the total cost for \( x \) outfits is: \[ 68.20x \]

  4. Set up the inequality: To stay within his budget, the cost of the outfits must be less than or equal to the remaining money: \[ 68.20x \leq 143.22 \]

  5. Solve the inequality for \( x \): \[ x \leq \frac{143.22}{68.20} \]

    Now, perform the division: \[ x \leq 2.1 \]

Since \( x \) must be a whole number (you can't buy a fraction of an outfit), we take the largest whole number that satisfies the inequality:

Thus, the maximum number of outfits Alonso can purchase is 2.

Final inequality: \[ x \leq 2 \]