[問題]GWD26-2

[magic]

Q2:
The ratio of the number of women to the number of men to the number of children in a room is 5:2:7, respectively. What is the total number of people in the room?
(1)The total number of women and children in the room is 12.
(2)There are fewer than 4 men in the room.
答案是D
為什麼條件二能解題阿??

[lance921]

這一題之前也有人解了 妳往前找一下