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February 17th, 2018, 12:31 AM   #1
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Word Problem Help.

I am having trouble solving this word problem. Could somebody please take me through he steps. I think I am hung up on the Kilobyte to pages conversion.

One kilobyte of computer memory will hold about 2/3 of a page of typical text (without formatting). A typical book has about 400 pages. Can the 9-gig flash drive I carry in my pocket hold tens, hundreds, or thousands of such books?
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February 17th, 2018, 12:50 AM   #2
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As 600 kilobytes of computer memory would hold 600 × 2/3 = 400 pages, which corresponds to one typical book, you need to divide the flash drive's capacity by 600 kilobytes. If the flash drive's capacity is 9 gigabytes, that calculation gives 15 thousand.
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February 17th, 2018, 12:51 PM   #3
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Thanks for the reply skipjack.

I am not grasping what steps we take to come up with the figure 600kb to plug into the other numbers using only the information provided. 600? × 2/3 = 400 pages.
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February 17th, 2018, 07:35 PM   #4
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I divided 400 by 2/3 to get 600, so I knew that 600 × 2/3 (pages) would equal 400 pages.
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February 20th, 2018, 04:49 AM   #5
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Notice that the original problem said that there were 400 pages and the memory could hold 2/3 page per kilobyte or "$\displaystyle \frac{page}{kilobyte}$". To cancel "page" and get the number of "kilobytes" 400 pages will hold, we need to multiply "page" by "$\displaystyle \frac{kilobyte}{page}$" which is the same as dividing by "$\displaystyle \frac{page}{kilobyte}$".

That is how we know we must divide "400 pages" by "2/3 page per kilobyte".

Last edited by Country Boy; February 20th, 2018 at 04:51 AM.
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