［問題］gwd-22-32

[shirley720622]

gwd-22-32

（表格貼不上，請看附檔，謝謝．）
The table above shows the number of students in a certain high school class who are boys and the number of students in the class who are studying biology. What is the total number of students in the class?

(1)　Of the boys in the class, 15 are studying biology.

(2) The number of girls in the class is twice the number of students in the class who are not studying biology.

答案Ｂ，可是我算出Ｃ

請問是怎麼算的，謝謝．

[flcl]

26+x =18+2x

x=8

26+8=34 全班人數