....Tom is doing certian work, when he does smaller than ten such jobs, he get paid 300; when he does ten or more such jobs he get paid 200 plus 10 evey job, when he does twenty or more, he get paid 20 every job.How many jobs he does this time?
1. Tom has done 2 more job this time than last time
2. Tom has earned 10 more this time than last time
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发表于 2007-3-17 18:13:00
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