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Whenever Martin has a restaurant bill with an amount between 10 and 99 ,he calculate the dollar amount of the tip as 2 times the tens digit of the amount of his bill.If the amount of Martin's most recent restaurant bill was between 10 and 99 ,was the tip calculated by martin on this bill greater than 15 percent of the amount of the bill?
(1)The amount of the bill was between 15 and 50
(2)The tip calculated by Martin was 8.
If 500 is the multiple of 100 that is closest to x and 400 is the multiple of 100 that is closest to y,which multiple of 100 is closest to x+y?
(1)x<500
(2)y<400 |
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发表于 2010-2-4 17:04:00
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