Question

What is the fastest way to solve the following question:

The ratio of boys to girls in Mr. Brown's class is 2:3. If there are 30 students in the class, how many more girls than boys are in the class?

Answer 1

Answer is 6.

Explanation:

I will now explain the fastest way to solve this. First off, the ratio is 2:3 so the first thing I do is combine that for 5, then do 30/5 for an answer of 6. Then, I multiply 6 for the ratio, which comes out as 12:18, 12 boys and 18 girls. 18-12=6, so there are 6 more girls than boys in the class.

Answer 2

There are 6 more girls than boys

Explanation:

boys :girls : total

2 3 2+3 = 5

There are 30 total students

30/5 = 6

Multiply each number by 6

boys :girls : total

2*6 3*6 5*6

12 18 30

There are 18 girls and 12 boys

18-12 = 6

There are 6 more girls than boys