PP-T1-DS28

[max999]

Which of Company X and Company Y earned the greater gross profit last year?

(1) Last year the expenses of Company X were 5/6 of the expenses of Company Y.
(2) Last year the revenues of Company X were $6 million less than the revenues of Company Y.

answer: E


請問爲啥不是C阿?
(1) x=5/6y
(2) x=y-6m

(1)+(2)
gross profit=revenue-expense
gross profit=5/6y- y+6m

y=36m , x=30m
-->就可以知道y>x

請問我的思路哪裡出了問題??
麻煩大大了 .Thanks

[Huang Hsin-Yi]

Which of Company X and Company Y earned the greater gross profit last year?

(1) Last year the expenses of Company X were 5/6 of the expenses of Company Y.
(2) Last year the revenues of Company X were $6 million less than the revenues of Company Y.

answer: E


請問爲啥不是C阿?
(1) x=5/6y Xe=5/6 Ye
(2) x=y-6m Xr=Yr-6

4個未知數算不出答案

(1)+(2)
gross profit=revenue-expense
gross profit=5/6y- y+6m

y=36m , x=30m
-->就可以知道y>x

請問我的思路哪裡出了問題??
麻煩大大了 .Thanks

[max999]

(1) [color=red] Xe=5/6 Ye
(2) Xr=Yr-6

4個未知數算不出答案

謝謝
我忘考慮r and e