有关数学题目文字叙述题：

相遇：                     meet / encounter / bump into 

追击：                     catch  up with  /  catch   / overtake/

打折                        discount

利息                        interest?

减少到                     decrease to

增加到                     list price 

直接付款                    down payment /  pay 

总共                        total

涨价                        make up

利润                        profit

每人                       per capita

比率                       ratio

零售价                     retail price

数据                        numbers / statistics

上升：                     rise / increase / jump/ go up

下降：                      go down/ drop /

波动                        go up and down / fluctuate