GMAT
题目
A burger restaurant employs 3 chefs during the week. These 3 chefs can make a total of 225 burgers in 5 hours. On the weekends, the restaurant employs more chefs. With all the chefs working on the weekends, 750 burgers can be made in 10 hours. How many more chefs are working on the weekend compared to in the week?
解析
使用公式：
\[
M_1 \times T_1 \times W_2 = M_2 \times T_2 \times W_1
\]
（其中 \(M\) 代表人数，\(T\) 代表时间，\(W\) 代表工作量）
代入数值：
\[
3 \times 5 \times 750 = (3+x) \times 10 \times 225
\]
解得：
\[
x = 2
\]
因此，答案为选项D。
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