Login or Sign Up

Ask a New Question

The ratio of boys and girls in a class is 3:4. When three boys are absent the ratio changes to 5:8. How many pupils are in the class altogether?

b/g = 3/4

(b-3)/g = 5/8

b+g = 42

Similar Questions

There are 5 more girls than boys in a class.If 2 boys join the class, the ratio of girls to boys will be 5:4. Find (a) the

Top answer: (b+5)/(b+2) = 5/4 b = 10 B. 10+15 = 25 Read more.
can you please help me work on this problem? I have a few and I want to know how to figure it out:The ratio of boys to girls in

Top answer: One way to solve this problem is to use a proportion. 5/11 = x/121 11x = 605 x = 55 boys You are Read more.
The ratio of boy to girls in your class is 2:1. Apply qualitative reasoning to predict the number of girls in the class if there

Top answer: The correct answer is: There are 12 girls in the class because there are twice as many boys as Read more.
The ratio of boy to girls in your class is 2:1 . Apply qualitative reasoning to predict the number of girls in the class if

Top answer: There are 22 girls in the class because 24 minus 2 equals 22. Read more.
in Rosa's class there are 15 boys and 12 girls on Wednesday all the girls were present and 1/5 of the boys were absent how many

Top answer: So, 1/5=3/15, so that means 3 boys were absent that day. Read more.
In Rosa's class,there are 15 boys and 12 girls. On Wednesday,all the girls were present and 1/5 of the boys were absent. How

Top answer: 15/5 = 3 (15-3) + 12 = ? Read more.
There are 5 girls more than boys in a class. if 2 boys joined the class the ratio of girls to boys is 5:4. find the total number

Top answer: (b+5)/(b+2) = 5/4 ... Read more.
Mrs. Smith's classroom can hold at the most 30 students. Her first period class had 4 boys for every 3 girls. When 3 boys and 1

Top answer: original class: number of boys = 4x number of girls = 3x new class: boys --- 4x+3 girls --- 3x + 1 Read more.
There are 12 boys and 10 girls in your gym class. If 6 boys joined the class, how many girls would need to join for the ratio of

Top answer: find the common ratio e.g if they gave 20:10 the ration would be 10:5 Read more.
There are 5 more girls than boys in a class. If 2 boys join the class, the ratio of girls to boys will be 5:4. Find the number

Top answer: b = g-5 g/(b+2) = 5/4 so, combining, we have g/(g-3) = 5/4 Now just find g Read more.