求解

zhangzaza

Each week a certain salesman is made a fixed amount equal to $300 plus a commission equal to 5 percent of the amount of these sales that week over $1,000.  What is the total amount the salesman was paid last week?
    (1)    The total amount the salesman was paid last week is equal to 10 percent of the amount of these sales last week.
(2)      The salesman’s sales last week total $5,000.

vyc

1) sufficient. 300+ (x-1000)*5%=x*10% ,可求
2) sufficient. 300+(5000-1000)*5%