Math

I need serious help. Tried to work it out but I just couldn't get the correct answer.

Benjamin and olivia are putting a new floor in their kitchen. To get the floor up to the desired height, they need to add 1 /8ft to subfloor. They can do this in one of two ways. They can put 1/2in sheet on top of 5/8in board (note that the total would be 9/8ft or 1 /8ft). They could also put 3/8in board on top of 3/4in sheet.

here is a table that gives the price for each sheet of plywood

1/8in $9.15
1/4in $13.05
3/8in $14.99
1/2in $17.88
5/8in $19.13
3/4in $21.36
7/8in $25.23
1in $28.49

1. what is the combined price for a 1/2in sheet and a 5/8 sheet?

2. what is the combined price for a 3/8in sheet and 3/4in sheet?

3. what other combination of sheets of ply wood yields the need 1 1/8in thickness?

4. of the four combinations, which is most economical?

5. the kitchen is to be 12ftx12ft. Find the total cost of the plywood you have suggested in qusetion 4

  1. 👍
  2. 👎
  3. 👁
  1. 1. $17.88 + $19.14 = ?
    2. $14.99 + $21.36 = ?
    3. 1 inch + 1/8 inch
    and 7/8 inch + 1/4 inch

    This gets you started. If you post your answers, we'll be glad to check them.

    1. 👍
    2. 👎
    👤
    Ms. Sue
  2. I am trying to reverse engineer your statement.
    Do you really mean you need to raise the floor 1 1/8 INCH?
    I will have to assume that is what you mean because you said that 1/2 inch + 5/8 inch = 9/8 inch was right
    now
    1. surely you can add 17.88 and 19.13 = 37.01
    2. I am also sure you can add 14.99 and 21.36 = 36.35
    3. What else here adds to 9/8?
    we could use 1/8+1 (9.15+28.49=37.64)
    we could use 7/8+1/4 (25.23+13.05=38.28)
    Of course we could use more than two sheets, but the wording of the question implies do not consider the next two:
    we could use 9 of 1/8 (9*9.15=82.35)
    we could use 3 of 3/8 (3*14.99=44.97)
    4. Now the minimum here was 36.35 for a sheet of 3/8 + a sheet of 3/4
    5. 12*12 = 144 ft^2
    a sheet of plywood is 4*8 = 32 ft^2
    so we need 4.5 of these.
    If we could get this by the half sheet, the price would be
    36.35*4.5 = 163.58 which would be fine for a mathematician but not for a lumber yard which is likely to insist that you buy full sheets, in other words five of each size:
    36.35*5 = 181.75

    1. 👍
    2. 👎
  3. 1 1/15+3 3/10-2 4/5=

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. (2-8) Chemistry - Science (Dr. Bob222)

    Which of the following statements is correct? A) The internal energy of a system increases when more work is done by the system than the heat that flows into the system. B) The system does work on the surroundings when an ideal

  2. probability

    Paul is vacationing in Monte Carlo. On any given night, he takes X dollars to the casino and returns with Y dollars. The random variable X has the PDF shown in the figure. Conditional on X=x, the continuous random variable Y is

  3. Physics

    you lift a 10 N physics book up in the air a distance of 1m at a constant velocity of .5m/s. What is the work done by the weight of the book? a) +10 J b)-10 J c) +5 J d)-5 J 10 N is the force of gravity and to find work you do

  4. math

    ab+cd=34 ac+bd=38 ad+bc=43 what is a+b+c+d=? multiple choice: a)15 b)16 c)17 d)18 e)19 First, I tried guessing and testing, but couldn't find the correct answer. Then I tried isolating a a=(34-cd)/b I'm stuck, there are too many

  1. English (phrasal modals)

    Zach used to work at an independent record label. Negotiating could be exciting, but he was supposed to slant everything in the label’s favor. Some reps used questionable tactics. He couldn’t look at himself in the mirror if

  2. Math, data management

    How many different ten digit telephone numbers contain four 2's, three 3s, and three 7s? I tried sorting the numbers out in order 2 2 2 2 | 3 3 3 | 7 7 7 10!/2!3!7! But I couldn't find the correct solution as the answer was 4200

  3. Math

    if f(x) = 2x^2+4 and g(x)=x-3 which number satisfies f(x)= (f o g)(x) A) 3/2 B) 3/4 C) 5 D) 4 I am positive that answer A is correct, i just cant get the work to prove it, i can disprove all other answers and my teacher has

  4. Physics

    A luggage handler pulls a 20kg suitcase up a ramp inclined at 25 degrees above the horizontal by a force F of magnigutde 145N that acts parallel to the ramp. The coefficient of kinetic friction between the ramp and the incline is

  1. Math

    which ordered pair is the solution of the following system of equations? y=2x-3 x+y=3 1) (1,2) 2)(2,1) 3)(3,0) 4)(3,3) MY work: y=2x-3 x+(2x-3)=3 3x-3=3 +3 +3 3x/3=6/3 x=2 x+y=3 2+y=3 -2 -2 y=1 so I got (2,1) which would be answer

  2. Physics 11

    A 62kg cyclist changes the speed of a 12kg bicycle from 8.2m/s to 12.7m/s. Determine the work done. I've already answered & gotten this question correct, however it made me confused about the concept. I found Ek. & Ek to find

  3. Chemistry

    (Paper Chromatography) 1. What carrier solution might work well to separate newspaper inks? Why? 2. What carrier solution might work to separate different salts? Why? 3. What carrier solution might work to separate different fatty

  4. English-Commas,Check

    The horse ran down the hill and through the meadow. a. Correct 2. (Points: 2) The restaurant has openings for waitresses bus boys and fry cooks. b. Incorrect 3. (Points: 2) Whenever I hear the opening measure of Beethoven's Fifth

You can view more similar questions or ask a new question.