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?

Answer 1

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.

Answer 2

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

Answer 3

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

Answer 4

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...