how many students who only like science?

Question

In a class there are 50 students, with 12 students liking math and science lessons. If there are 2 students who do not like mathematics or science and the ratio of students who only like mathematics and science is 2:4. then, how many students who only like science?

Answer 1

24 only like science

12 only like math

12 like math & science

2 don't like either

sums to 50

12/24 =2:4 ratio of those who only like math to those who only like science

50-12-2 = 36 who only like one of the 2 subjects. 1/3 of the 36 like only math, 2/3 of 36 like only science