PP-DS199

[max999]

Warehouse W's revenue from the sale of sofas was what percent greater this year than it was last year?

(1) Warehouse W sold 10 percent more sofas this year than it did last year.

(2) Warehouse W's selling price per sofa was $30 greater this year than it was last year.

answer: E

[amyliang]

列式 去年的銷售量Q 今年的1.1Q
去年價格P 今年p+30
1.1Q*(p+30)/ QP..還是算不出來 所以E

[max999]

原來少考慮P
謝謝amyliang大大