又一題不會了... 唉~
有人有去上來欣的數學課的嗎?...可以替我解答嗎?
這是來欣作業M10的第28題,我看不懂以下題目標粗體的部分,麻煩!!
In a certain school, 40 more than 1/3 of all the student are taking a science course and 1/4 of those taking a science course are taking physics. If 1/8 of all the students in the school are taking physics, how many students are in the school?
(A)240 (B)300 (C)480 (D)720 (E)960
正解是(A)