Information stored on a hard drive consists of programs and data. The proportion of data storage space to program storage space is 10:1. If the total storage space is 22 megabytes, how much will be allocated to programs and how much to data?
Let p= space for programs in MB
Let d= space for data in MB
Proportion of data to programs is d I p= 10 / 1
Total space for both data and programs is 22 MB Express data in terms of total and program space: Then: (22 —p) I p = 10 / 1
(22 —p)=10p 22 = 10p + 1p
22 = 1 1p p=22/11
p=2 MB d= 22 —p
Find data: d= 22 —p d=20 MB
Thus, there will be 20 MB of data and 2 MB of programs
Check: 20 / 2 = 10/1, the correct proportion.
And 20 + 2 = 22 MB, the correct total space
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