+275 At Roxas Middle School, every student studies Spanish, Chinese, or both Spanish and Chinese. There are 374 students enrolled at the school, and 100 of these students study both Spanish and Chinese. Also, the number of students studying Spanish is twice the number studying Chinese. How many students at Roxas Middle School study Spanish?
So i subtracted 100 from 374 to get 274 but i realized i cannot do that because the students studying both spanish and chinese will be counted in the chinese section and spanish section
+128473 Assuming that everyone takes at least one of the subjects :
Number in School = N(Chinese) + N(Spanish) - N (Both)
374 = x + 2x - 100
474 = 3x
x = 474 / 3 = 158 = total taking Chinese
2x = 2 (158) = 316 = total taking Spanish
Proof (you can set up in a Venn diagram)
58 take only Chinese + 100 take both + 216 take only Spanish
