Janelle and her friends are selling bracelets and headbands ahead of the school’s pep rally to support the team during homecoming. They figured they would sell the headbands for $4 and the bracelets for $2. They’d like to make more than $200 and sell no more than 100 items. Select one of the following combinations that Janelle can sell to make at least $200, but have no more than 100 items sold.

1 answer

To determine a suitable combination of headbands and bracelets that Janelle and her friends could sell to achieve their goals, we can set up two equations based on the information provided:

Let:

  • \( h \) = number of headbands sold
  • \( b \) = number of bracelets sold

We have the following conditions:

  1. The total amount of money earned needs to be more than $200: \[ 4h + 2b > 200 \]

  2. The total number of items sold cannot exceed 100: \[ h + b \leq 100 \]

To find a suitable combination, we can manipulate both equations. First, let's simplify the first equation:

From \( 4h + 2b > 200 \), we can divide the entire equation by 2 to simplify it: \[ 2h + b > 100 \]

Now we can explore some possible combinations of \( h \) and \( b \) that satisfy both inequalities.

Example Combinations:

  1. Try \( h = 50 \) and \( b = 0 \):

    • \( 2(50) + 0 > 100 \): \( 100 > 100 \) (not valid)
    • Total items: \( 50 + 0 = 50 \) (valid)
    • Total sales: \( 4(50) + 2(0) = 200 \) (not more than 200).
  2. Try \( h = 51 \) and \( b = 0 \):

    • Total items: \( 51 + 0 = 51 \) (valid)
    • Total sales: \( 4(51) + 2(0) = 204 \) (valid).
  3. Try \( h = 48 \) and \( b = 4 \):

    • Total items: \( 48 + 4 = 52 \) (valid)
    • Total sales: \( 4(48) + 2(4) = 192 + 8 = 200 \) (not more than 200).
  4. Try \( h = 47 \) and \( b = 8 \):

    • Total items: \( 47 + 8 = 55 \) (valid)
    • Total sales: \( 4(47) + 2(8) = 188 + 16 = 204 \) (valid).

Based on these findings, the combination of \( h = 51 \) and \( b = 0 \), or \( h = 47 \) and \( b = 8 \) would be suitable.

Thus, a valid combination Janelle can sell is:

  • Headbands = 51, Bracelets = 0, or
  • Headbands = 47, Bracelets = 8.

Both scenarios maintain the conditions of selling more than $200 while selling no more than 100 items total.