Ask a New Question
Menu

a box of 20 dozen pencils cost $1.35 follow the steps to determine the unit price per pencil

1 dozen=__pencils
2 dozen=__pencils
divide the cost of the box by the number of pencils in the box to calculate the unit price.
reminder: include the zero on the left side of the zero and round the price to the hundredths place which is 2 digits on the right side of the decimal.
the unit price is $__ per pencil

3 answers

To find the unit price per pencil, we will follow the steps provided:

  1. Determine how many pencils are in a dozen:

    • 1 dozen = 12 pencils
    • 2 dozen = 24 pencils

  2. Calculate the total number of pencils in 20 dozen:

    • 20 dozen = 20 × 12 pencils = 240 pencils

  3. Now we calculate the unit price by dividing the total cost of the box by the total number of pencils:

    • Total cost of the box = $1.35
    • Number of pencils = 240

    Unit price = Total cost / Number of pencils Unit price = $1.35 / 240

  4. Now we calculate this division:

    • $1.35 ÷ 240 = $0.005625

  5. Round this to the hundredths place:

    • $0.005625 rounds to $0.01 when rounded to the nearest hundredths (2 digits after the decimal).

Finally, the unit price is $0.01 per pencil.

the school store is running low on erasers for pencils they want to order more so they look at the prices for 4 brands
determine the unit price of each brand round the price to the hundredths place. remember to include the zero before the decimal.
brand a: 20 for $2.50=$__ per eraser
brand b: 35 for $3.25=$__ per eraser
brand c: 50 for $5.25=$__ per eraser
brand d: 100 for $10.00=$__ per eraser
which one is the best buy? the best buy will have the lowest cost per eraser
a. brand a
b. brand b
c. brand c
d. brand d

To determine the unit price of each brand, we'll calculate the price per eraser for each brand and then round the result to the hundredths place.

Brand A

  • 20 erasers for $2.50
  • Unit price = Total cost / Number of erasers = $2.50 / 20 = $0.125
  • Rounded to the hundredths place: $0.13

Brand B

  • 35 erasers for $3.25
  • Unit price = $3.25 / 35 = $0.092857
  • Rounded to the hundredths place: $0.09

Brand C

  • 50 erasers for $5.25
  • Unit price = $5.25 / 50 = $0.105
  • Rounded to the hundredths place: $0.11

Brand D

  • 100 erasers for $10.00
  • Unit price = $10.00 / 100 = $0.10
  • Rounded to the hundredths place: $0.10

Summary of Unit Prices

  • Brand A: $0.13 per eraser
  • Brand B: $0.09 per eraser
  • Brand C: $0.11 per eraser
  • Brand D: $0.10 per eraser

Best Buy

To determine which brand offers the best buy, we look for the lowest cost per eraser:

  • Brand A: $0.13
  • Brand B: $0.09 (Lowest)
  • Brand C: $0.11
  • Brand D: $0.10

The best buy is Brand B at $0.09 per eraser.

Thus, the answer is b. brand b.