Any ideas on this problem? Thanks!

Let a be a positive number. Prove that for each real number x there is an integer n such that na is less than or equal to x is less than (n+1)a.

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- September 3rd 2009, 11:31 AMfriday616analysis
Any ideas on this problem? Thanks!

Let a be a positive number. Prove that for each real number x there is an integer n such that na is less than or equal to x is less than (n+1)a. - September 3rd 2009, 12:04 PMThePerfectHacker