The ratio

The ratio of girls to boys in Mrs. White's class is 3:2.  If there are 12 boys, how many girls are in the class room?

Correct answer:

g =  18

Step-by-step explanation:

$$\begin{gathered} b=12 \\ g:b=3:2 \\ g={\displaystyle \frac{3}{2}}\cdot b={\displaystyle \frac{3}{2}}\cdot 12=18 \end{gathered}$$

Try another example

Related math problems and questions:

• Pupils 7
  There are 40 pupils in a certain class. 3/5 of the class are boys. How many are girls?
• Forty
  Forty five of the 80 students were girls. What is the ratio of girls to boys?
• Ratio of counts
  There are 15 boys and 13 girls in the class. What are the ratio of boys and girls?
• Pupils
  There are 32 pupils in the classroom, and girls are two-thirds more than boys. a) How many percents are more girls than boys? Round the result to a whole percentage. b) How many are boys in the class? c) Find the ratio of boys and girls in the class. Writ
• Groups
  In the 6th class there are 60 girls and 72 boys. We want to divide them into groups so that the number of girls and boys is the same. How many groups can you create? How many girls will be in the group?
• The classroom
  In the seventh class the number of boys and girls are at a ratio of 4:5. Boys are 16. How many total students are in the classroom?
• Students
  There are 2/6 girls out of 1050 students at the school. Of these, 4/5 have another sibling. How many girls are in school? How many boys are in school? How many girls do not have a sibling?
• Boys and girls
  There are 20 boys and 10 girls in the class. How many different dance pairs can we make of them?
• Boys and girls
  There are eight boys and nine girls in the class. There were six children on the trip from this class. What is the probability that left a) only boys b) just two boys
• Boys to girls
  The ratio of boys to girls at a party is 3:5. If six more boys arrived and four girls left the party, the ratio of boys to girls would be 5:6. How many people were at the party initially?
• Classroom 4
  In a class of 36 pupils, 2/3 are girls. How much it is in a class girls and boys?
• Shirts
  In a classroom, 1/6 of the students are wearing blue shirts and 2/3 are wearing white shirts. There are 36 students in the class. How many students are wearing a shirt other than blue or white?
• Girls
  The boys and girls in the class formed without the rest of the fives, 2 girls and 3 boys. There are 6 girls missing to create mixed pairs (1 boy and 1 girl). How many girls are in the classroom?
• Four-member team
  There are 14 girls and 11 boys in the class. How many ways can a four-member team be chosen so that there are exactly two boys in it?
• Boys and girls
  In the class are 20 boys and 5-times less girls. How many girls are in the classroom? How many all children are in the class?
• Classroom
  In a class are 32 pupils. Boys are 8 less than girls. How many boys and girls are in the classroom?
• Ski class
  Class attend 30 boys and some number of girls. Ski training was attended by 28 boys and all the girls, which was 95% of all students. How many girls attend this class? How many percent is that?