Posted by **steven** on Tuesday, March 1, 2011 at 10:37pm.

Last year's computer model is on sale for $799. You can add more memory to the computer. Each chip of 8 megabytes of memory costs $25. How many megabytes of memory can you add if you have at most $1,000 to spend.

- math -
**MathMate**, Tuesday, March 1, 2011 at 11:41pm
Money left after buying computer

= 1000-799

= $201

Number of 8-MB chips $201 can buy

= $201/25

= 8 chips.

Total memory upgrade

= 8*8Mb

= 64 Mb.

Note: assumes no tax payable

- PreAlgebra -
**Mrs. Clark**, Wednesday, March 18, 2015 at 6:23pm
AT MOST signifies that you must write and inequality to solve this problem. AT MOST signifies to write the symbol "less than or equal to". <

---

First write down what you know:

- You will spend $1,000 at most

- The computer's initial cost is $799

- Each chip contains 8 megabytes (MB)

- Each chips costs $25

- $1,000 - $799 will give you how much money you will have left over

Now let's solve:

Let x represent the amount of megabytes you can add

$1,000 - $799 (gives you the amount of money you have left over to buy extra memory) = $201

$201/$25 (gives you the number of chips you can buy) = 8

8(8) (gives you the number of megabytes you can buy - the answer!! ;D) = 64

The inequality with steps:

1,000 - 799

8( -------------- ) < x

25 ---

201

8( -------------- ) < x

25 ---

8(8) < x

---

64 < x

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