# math

posted by .

I am confused need help
a computer store sold a total of 300 items last month. the store sold six times as many hard drives as they did CD-RoM drives, and half as many floppy drives as hard drives. Based on this information,, how many of each item were sold?

Let X = number of hd.
Y = number of cd
Z = number of fl/d.
=======================
You know:
X + Y + Z = 300
The problem tells you that the store sold six times as many hard drives as cd Rom so you know 6Y = X.
The problem tells you that the store sold 1/2 as many floppy drives as hard drives; therefore, 1/2 X = Z
===============================
Using X + Y + Z= 300, just substitute the value of Y in terms of X (from above which is Y= 1/6 X) and the value of Z in terms of X and solve for X.
I hope this helps. We shall be happy to check your work if you post it.

I really don't understand, i am new at this and have 4 anwser to it don't know which one because don't know how to get to the answer and they are:
1.30hd,90fl/d and 180 cd
2.40",20" and 240 "
3.180hd,90fl, and 30cd
4, 240hd, 20fl,and 40cd
My problem is how to get this anwser, could u explain to me how ge to the anwer of course knowing the anwer, i will understand.

If the store sold 1 cd / 6x as many hd = 6 / half as many floppy = 3 / 1 + 6 + 3 = 10.

They are sold in ratios of 10.

divide 10 into 300 etc etc dose this help.

mike

thanks i still don't get it but i am working on it. ok thanks again.

Obviously you have interpreted four different ways and three of those ways are not right. Do what I suggested and post your work so we can give you some guidance as to where you are going wrong. I have given you the three equations you need to solve the problem; the remainder is just arithmetic. I don't want to work the problem for you. I want you to understand how to do the problem.

Finding the area of a rectangle with 5 as one side and x+3 on the other.

Hey i said i love math no go screw a duck!

• math -

A computer store sold a total of 300 items last month. The store sold six times as many hard drives as they did CD-ROM drives, and half as many floppy drives as hard drives. Based on this information, how many of each items were sold?

## Similar Questions

1. ### ict

why does a computer need a floopy drive as well as a hard drive It doesn't . None of my computers have floppy drives. Floppy drives were used in ancient times to have portable data input/export. These days we use CD/DVD drives and …
2. ### repost

computer store sold total of 300 items last month the store sol six times as many hard drives as they did CD-Rom drives and half as many floppy drives, based on this info how many of each item were sold ?
3. ### math

A computer store sold a total of 300 items last month. The store sold six times as many hard drives as they did CD-ROM drives, and half as many floppy drives as hard drives. Based on this information, how many of each item were sold?
4. ### Math

A computer store sold a total of 300 items in a month, and sold six times as many hard drives as they did CD-ROM drives, and half as many floppy drives as hard drives, how many of each item were sold?

a computer store sold 300 items -store sold 6 times asa many hard drives as theyn did cd-rom drives and half as many floppy dtives as hard drives how many of each item
6. ### Technology in the Classroom

There are several different hard drives available for a computer.Which of the following size hard drives is the largest?
7. ### Statistics

The following data represent the number of flash drives sold per day at a local computer shop and their prices. Price (x) Units Sold (y) \$34 3 36 4 32 6 35 5 30 9 38 2 40 1 a. Perform an F test and determine if the price and the number …
8. ### Statistics

Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate independently, and at least one drive must be operating for the sytem to eperate successfully. Both drives …
9. ### math

a computer store sold a total of 300 items last month. the store sold six times as amny hard drives as they did CD-ROM drives, andhalf as many floppy drives as hard drives. based on this information, how many of each items were sold
10. ### math,

Exponential distribution was used to model the lengths of CD-ROM drives in a two drive system. The two CD-ROM drives operate independently, and at least one drive must be operating for the sytem to eperate successfully. Both drives …

More Similar Questions