A science class has a ratio of girls to boys of 4 to 3. If the class has a total of 35 students, how many more girls are there than boys?

Question

A science class has a ratio of girls to boys of 4 to 3.  If the class has a total of 35 students, how many more girls are there than boys?

phi · Answer

4/7 of the class is girls  and 3/7 of the class is boys
there are 4/7 - 3/7  more girls
that is 1/7 of the class are the "extra" girls.

anonymous · Answer

so 35/7=5
and 5*1=5

anonymous · Answer

so there are 5 more girls than boys in the class?

anonymous · Answer

oki thank you. one more question please : If 3 parallel lines are cut by 3 non-parallel lines, what is the maximum number of intersections possible?
i draw it and counted . there are 12, but i want to know how...