7.some products total costs $54.64 exclusive tax.The tax is $0.79 which is 5% rate to the taxable items. The untaxed costs
My answer: 38.84
确认:39.63
解:令untaxed costs x $,则有 (54.64+0.79)-0.79/5%=39.63(此题争议最大,请确定者用中文写原因结果。)
谢谢大家讨论。作者: tongxun 时间: 2003-1-22 18:57