Question

There are 350 students at a middle school dance, where ratio of 7th graders to 8th graders is 3:4 how many of the students at the dance are 8th graders?

Answer 1

150 7th Graders and 200 8th graders

Explanation:

Basically, add the parts of the ratio together and create 7. Then, to find out how much 1 part is equal to, divide the amount of students by the number of parts - so it would be like 350/7 = 50.

So now you know that 1 part is equal to 50 students. From here, you can multiply the two amounts of parts by 50.

3 x 50 = 150 7th Graders

4 x 50 = 200 8th Graders