gmat 2 - Q22 - DS:
A construction company was paid a total of $500,000 for a construction project. The company’s only costs for the project were for labor and materials. Was the company’s profit for the project greater than $150,000?
(1)The company’s total cost was three times its cost for materials.
(2)The company’s profit was greater than its cost for labor.
答案是(C)
我本來以為是(E)但後來算了好久好久 才勉強得出下列算式
題目條件:pay=$500,000, C=L+M
(1) C=3M => L=2M
(2) profit=$500,000-C>L
(1)+(2)=> profit=($500,000-3M)>2M => M<$100,000
=> profit>$500,000-$300,000=$200,000
請問有沒有比較快或比較清楚的的解法,我覺得有點虛虛的
謝大家∼