[問題]GWD29-21

[magic]

Q21:
A toy store’s gross profit on a computer game was 10 percent of the cost of the game. If the store increased the selling price of the game from $44 to $46 and the cost of the game remained the same, then the store’s gross profit on the game after the price increase was what percent of the cost of the game?

A. 10.5%
B. 11%
C. 12.5%
D. 13%
E. 15%
這題題目看的懂
可是卻不知道怎麼解
答案是E
請大大們教一下

[kwtluck]

profit = selling price - cost
10%*cost = $44-cost, cost= $40
題目求增加後的利潤與成本比
所以是(10%*40)+2/40=15%

[magic]

謝謝大大
我了解嚕