Question

The ratio of the number of boys to the number of girls in a certain school club is 3 to 4. If there are 5 more girls than boys in the club, how many girls are in the club

Answer 1

so 4 times 5 is 20 girls

your answer is 20

Explanation:

you have to do cross math so 3 over 4 times 5 over? so

Answer 2

Answer: there are 20 girls in the club

Explanation:

Let b represent the number of boys in the school club.

Let g represent the number of girls in the school club.

The ratio of the number of boys to the number of girls in a certain school club is 3 to 4. This means that

3/4 = b/g

3g = 4b

b = 3g/4

If there are 5 more girls than boys in the club, it means that

g = b + 5 - - - - - - - - - - - 1

Substituting b = 3g/4 into equation 1, it becomes

g = 3g/4 + 5

Multiplying through by 4

4g = 3g + 20

4g - 3g = 20

g = 20

substituting g = 20 into b = g - 5, it becomes,

b = 20 - 5 = 15