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houses

by ketkoag » Wed Jun 10, 2009 12:58 am
Last year in sales of single-home houses, 60% of already-existing houses was sold while 76% of new-established houses sold, if three times as many new-established houses as already-existing houses, what percent of single-home houses has been sold?

[spoiler]IMO: 69.5% please lemme know if this is not correct..[/spoiler]

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by sacx » Wed Jun 10, 2009 2:34 am
Let number of already existing houses = 100
New established = 300

60% of already existing houses = 60
76% of new established houses = 76*3 = 228

total house sold = 228+60 = 288

Percentage = (288/400 ) * 100 = 72%
SACX

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by PAB2706 » Wed Jun 10, 2009 6:41 am
yep 72 is right...